To write 1 y 1 y as a fraction with a common denominator, multiply by x x x x. If yes, then you can force the equation equal to 0. So root is the inverse operation of exponents. f (8)=78−5=56−5=51 → If substitute x by 8, this is what we get. In order to show that T is a function, you need to prove that for each pair of subsets A and B of X there is one and only one subset U of X/times X such that T(A,B)=U, that is, ((A,B),U) /in T What is the right norm for the Banach space tensor product in this situation?. Mathway>Simplify 1/x+1/y. x plus x in algebra? Conceptual Understanding. In the same way, we can show the distributive law for exponentiation: (xy)a = (xy) × (xy) × ⋯ × (xy) ⏟ a times = x × x × ⋯ × x ⏟ a times × y × y × ⋯ × y ⏟ a times = xaya. The Correct Answer Explained By A Mathematician MindYourDecisions MindYourDecisions. Understand Negative numbers, one step at a time. Calculate it! Examples: 1+2 , 1/3+1/4 , 2^3 * 2^2 (x+1) (x+2) (Simplify Example), 2x^2+2y @ x=5, y=3 (Evaluate Example) y=x^2+1 (Graph Example), 4x+2=2 (x+6) (Solve Example) Algebra Calculator is a calculator that gives step-by-step help on algebra problems. His Dad puts him back at the start and then Steven steps backwards 2 steps, and does this three times:. But this can really be interpreted as 2 times x So for example, if someone says 2 dot x, when x is equal to 3, well this would be the same thing as two times three, when x is equal to three. ? Q&A By tamdoan · November 30, 2022 ·. In order to simply ‘multiply’ or ‘times’ a given number, you add the given number to itself a number of times, for instance, 4 multiplied by 3 is the same as saying 4 + 4 + 4 = 12. In this video we look at the reason why x times x is x raised to the power 2, also known as x squared. Thus, x squared times x squared can be written as x 2 · x 2. And one and a half times more should be 1. A positive times a positive will always. The equation calculator allows you to take a simple or complex equation and solve by best method possible. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Calculate the pH of a solution of 0. Multiplying and dividing negatives are the same because there is no difference between those sides of zero except the side of zero. Here: x x is called the base. Is a matrix multiplied with its transpose something special?. sin(2x) = 2 sin x cos x cos(2x) = cos ^2 (x) - sin ^2 (x) = 2 cos ^2 (x) - 1 = 1 - 2 sin ^2 (x). Solve advanced problems in Physics, Mathematics and Engineering. Since x is equal to x 1 / 2, your equation is the same as x 3 / 2 = x, only x = 0, 1 work as solutions. Sometimes in math we describe an expression with a phrase. Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable. An online X times X calculator with detailed explanation. y=x^2+1 (Graph Example), 4x+2=2 (x+6) (Solve Example) Algebra Calculator is a calculator that gives step-by-step help on algebra problems. com>What Times What Equals. Lets try substituting different values. Combine any like terms on each side of the equation: x x x x-terms with x x x x-terms and constants with constants Arrange the terms in the same order, usually x x x x -term before constants. Combine any like terms on each side of the equation. If all of the terms in the two expressions are identical, then the two expressions are equivalent. Eight divided by four is 2, therefore x is equal to 2. When multiplying exponents, such as x times x, would the. x squared is a notation that is used to represent the expression x ×x x × x. Step by steps for fractions, factoring, and prime factorization. To check an answer to a system of equations containing x and y, enter the two equations separated by a semicolon, followed by the @ sign and an ordered pair containing your x-value and y-value. Combine any like terms on each side of the equation: x x x x-terms with x x x x-terms and constants with constants Arrange the terms in the same order, usually x x x x -term before constants. com%2fcalc%2ftutorial%2f/RK=2/RS=LptPFEmsFGlj. Well here we have Baby Steven taking his first steps. , x squared equals x multiplied by itself. To check an answer to a system of equations containing x and y, enter the two equations separated by a semicolon, followed by the @ sign and an ordered pair containing your x-value and y-value. Multiplying Negatives Makes A Positive. Algebra Solve for x Calculator Step 1: Enter the Equation you want to solve into the editor. 22 means to multiply 2 by itself two times 41 means to multiply 4 by itself once x3 means to multiply x by itself three times In your case, x2 means that x is multiplied by itself 2 times, or x ⋅ x . What the X number does tell you is a rough measure of how much compromise was made in the lens design. What the X number does tell you is a rough measure of how much compromise was made in the lens design. If you evaluate x T ⋅ x you multiply the one single row of x T with the single column of x to give you just a single number. Free Online Scientific Notation Calculator. In order to simply multiply or times a given number, you add the given number to itself a number of times, for instance, 4 multiplied by 3 is the same as saying 4 + 4 + 4 = 12. x^2 because you have x number of xs. tan ^2 (x) + 1 = sec ^2 (x). What is x plus x in algebra? Conceptual Understanding. To write 1 y 1 y as a fraction with a common denominator, multiply by x x x x. Eight divided by four is 2, therefore x is equal to 2. Multiplying Positive and Negative Numbers: 3 Simple Rules. 1 ⋅ x = x OR: 0 + x = x 1 + x = 1 XOR: 0 ⊕ x = x 1 ⊕ x = x One variable NOT: NOT x = x AND: x ⋅ x = x x ⋅ x = 0 OR: x + x = x x + x = 1 XOR: x ⊕ x = 0 x ⊕ x = 1 XOR XOR can be defined in terms of AND, OR, NOT: x ⊕ y = ( x ⋅ y) + ( x ⋅ y) x ⊕ y = ( x + y) ⋅ ( x + y) x ⊕ y = ( x + y) ⋅ (x ⋅ y) Commutativity AND: x ⋅ y = y ⋅ x OR: x + y = y + x. And by some kind of definition, this equals the squared length of the vector in a euclidian sense. 4 is less than 5. Algebra Calculator Tutorial. In general, no. To solve x plus x, imagine the variable x as a familiar object, for example an apple. In order to simply ‘multiply’ or ‘times’ a given number, you add the given number to itself a number of times, for instance, 4 multiplied by 3 is the same as saying 4 + 4 + 4 = 12. He takes 2 paces at a time, and does this three times, so he moves 2 steps x 3 = 6 steps forward: Now, Baby Steven can also step backwards (he is a clever little guy). Type your algebra problem into the text box. Equivalent expressions are expressions that work the same even though they look different. Number of solutions to equations. 1 ⋅ x = x OR: 0 + x = x 1 + x = 1 XOR: 0 ⊕ x = x 1 ⊕ x = x One variable NOT: NOT x = x AND: x ⋅ x = x x ⋅ x = 0 OR: x + x = x x + x = 1 XOR: x ⊕ x = 0 x ⊕ x = 1 XOR XOR can be defined in terms of AND, OR, NOT: x ⊕ y = ( x ⋅ y) + ( x ⋅ y) x ⊕ y = ( x + y) ⋅ ( x + y) x ⊕ y = ( x + y) ⋅ (x ⋅ y) Commutativity AND: x ⋅ y = y ⋅ x OR: x + y = y + x. Wiki User ∙ 2011-04-10 00:05:19 This answer is: Study guides Algebra 20 cards A polynomial of degree zero is a constant term. When multiplying variables in algebra which are the same, you can solve it by adding the exponents. To check whether a more complex expression is equivalent to a simpler expression: Distribute any coefficients: a ( b. In algebra when two symbols that stand for a number are placed beside each other the operation between them is taken to be multiplication. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. x x -term before constants. Multiplication is, therefore, a quicker way of adding the same number many times, for example, 3 × 4 = 12. Last but not least if one is interested in how much the linear map represented by A changes the norm of a vector one can compute A x, A x = A T A x, x. We can write x = ab + (-a) [ (b) + (-b) ] (factor out -a) = ab + (-a) (0) = ab + 0 = ab. 5 ≥ 4, x ≥ y means x is greater than or equal to y. The inverse matrix is B − 1 = ( A T A) − 1 = A − 1 A − T. arccos 1 = cos-1 1 = 0 rad = 0° See: Arccos function. In math terms: x*x = x^2. Thus 2xy means 2 times x times y or said algebraically 2xy = 2 /times x /times y. Another way you could write it is You could write 2 and then you could write the x in parentheses right next to it. Multiplication is, therefore, a quicker way of adding the same number many times, for example, 3 × 4 = 12. 2/times (-3)=-6 2 × (−3) = −6. To solve x plus x, imagine the variable x as a familiar object, for example an apple. X can be any number or a power value of your choice and e is the exponent. In order to show that T is a function, you need to prove that for each pair of subsets A and B of X there is one and only one subset U of X/times X such that T(A,B)=U, that is, ((A,B),U) /in T What is the right norm for the Banach space tensor product in this situation?. So: Just write x and x^T$ as matrices and use the usual way of multiplying them. Multiply A on the left with A T, giving B = A T A. Keep on reading to know what does e equal to and. If x is equal to 6 and the relation ship between y and x can be shown by the relation y is equal to four times x, y. 1 ⋅ x = x OR: 0 + x = x 1 + x = 1 XOR: 0 ⊕ x = x 1 ⊕ x = x One variable NOT: NOT x = x AND: x ⋅ x = x x ⋅ x = 0 OR: x + x = x x + x = 1 XOR: x ⊕ x = 0 x ⊕ x = 1 XOR XOR can be defined in terms of AND, OR, NOT: x. zt3hoaYM6_C3ik- referrerpolicy=origin target=_blank>See full list on mathpapa. The following notation is used for Boolean algebra on this page, which is the electrical engineering notation: False: 0. To quickly open this page: Windows Chrome: on top right click More > More Tools > Create shortcut. 0 when x equals 0. This rule also works for quotients (x y)a = xa ya, but it does NOT work for sums. Detailed step by step solution for e^{-x}/times e^{-x} Analytics Cookies allow us to understand how visitors use our Services. While 10% more means 1. How do I convert lens focal length (mm) to x. Lets try substituting different values for x f (3)=73−5=21−5=16 → If substitute x by 3, this is what we get. You would never say a tenth times more or half times more or even one time (s) more. X can be any number or a power value of your choice and e is the exponent. The arccosine of x is defined as the inverse cosine function of x when -1≤x≤1. Sometimes in math we describe an expression with a phrase. x times x equals x^2, or x squared. In order to show that T is a function, you need to prove that for each pair of subsets A and B of X there is one and only one subset U of X/times X such that T(A,B)=U, that is,. x is greater than or equal to 2x. You can think of 2x as being x + x ( x plus x ). greater than or equal to. Then, x squared times x squared = x 2 · x 2 = x (2 + 2) = x 4. Yes, but also see below Explanation: ln2x is simply another way of writing (lnx)2 and so they are equivalent. And then you would get zero equals zero, which is true for any x that you pick. This calculator also displays a simple solution to enhance your understanding. -10 x -5 = +50A negative times a negative will always equal a positive number. 5 = x^2 + 4x + 8 0 = x^2 + 4x + 3 { subtract 5 from both sides } 0 = (x + 3) (x + 1) { factorise }. In algebra, x x multiplied by x x can be written as x ×x x × x (or) x⋅ x x ⋅ x (or) xx x x (or) x(x) x ( x) x x. 1x the original, making 300% more logically mean 4x the original, this doesnt happen with X times more. x T A A T x = ( A T x) T ( A T x) > 0 Then we have: A matrix is positive definite if and only if its the Gram matrix of a linear independent set of vectors. If you evaluate x T ⋅ x you multiply the one single row of x T with the single column of x to give you just a single number. What is 2x times x in Algebra? Multiplying Variables. For example, (3 + 5)2 = 82 = 64, but this is NOT equal to 32 + 52 = 9 + 25 = 34. This function f (x) =7x−5 means that each time we plug in a value of x we would multiply it by 7 then subtract 5. Note that x by itself is actually to. Example: Solve for 5 = x^2 + 4x + 8. Disclaimer: This calculator is not perfect. What does cosx sinx equal?. Khan Academy>Writing expressions. x times x, would the >When multiplying exponents, such as x times x, would the. y=x^2+1 (Graph Example), 4x+2=2 (x+6) (Solve Example) Algebra Calculator is a calculator that gives step-by-step help on algebra problems. The reason is that the pivots of B are always at the main diagonal: see the first reference. More formally we have: Which says the absolute value of x equals: x when x is greater than zero; 0 when x equals 0; −x when x is less than zero (this flips the number back to positive); So when a number is positive or zero we leave it alone, when it is negative we change it to positive using −x. g of x is equal to x to the third power plus 4x. x times x equals x^2, or x squared. What does x times y equal?. This rule also works for quotients (x y)a = xa ya, but it does NOT work for sums. 22 means to multiply 2 by itself two times 41 means to multiply 4 by itself once x3 means to multiply x by itself three times In your case, x2 means that x is multiplied by itself 2 times, or x ⋅ x . X 1/2 = root x so when you see x 2/2 is the same as (root x) 2 or root (x 2 )so it does make sense. Just like constants, variables without an exponent have an implied exponent of 1 (something^1 = theSameThing). X Times 2x? – Thelma Thinks>What Is X Times 2x? – Thelma Thinks. Khan Academy>Zero product property (video). A negative times a positive will always equal a negative number. The e calculator helps you to calculate the value of e to the power of x. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Multiplication calculator (×). 0 Then we have: A matrix is positive definite if and only if its the Gram matrix of a linear independent set of vectors. Absolute Value in Algebra. To check an answer to a system of equations containing x and y, enter the two equations separated by a semicolon, followed by the @ sign and an ordered pair containing your x-value and y-value. What Does X Times X EqualBut if we were to do this, we would get x is equal to x, and then we could subtract x from both sides. f of x is equal to 7x minus 5. f (x)=7x−5 → This our function with just x. Also, x = [ a + (-a) ]b + (-a) (-b) (factor out b) = 0 * b + (-a) (-b) = 0 + (-a) (-b) = (-a) (-b). times x in Algebra? Multiplying Variables. When you multiply a constant by itself, it is just something^2. -10 x -5 = +50A negative times a negative will always equal a positive number. transpose something special?>Is a matrix multiplied with its transpose something special?. x x -term before constants. 2X would be X + X x^2 because you have x number of xs Whereas 2x is 2 “x”s which is twice x x squared PLEASE HELP!!! The Kb of pyridine, C5H5N, is 1. What is x times x equal to in algebra? To solve x multiplied by x, try to observe the pattern created by letting x be any number. Eight divided by four is 2, therefore x is equal to 2. Multiplying Positive and Negative Numbers: 3 Simple Rules>Multiplying Positive and Negative Numbers: 3 Simple Rules. Then the arccosine of x is equal to the inverse cosine function of x, which is equal to y: arccos x = cos-1 x = y. Tablet Mode If you are using a tablet such as the iPad, enter Tablet Mode to display a touch keypad. – user61527 Feb 2, 2014 at 1:42 Squareroot is the opposite of squaring. Scientific calculator online with fraction. The e calculator helps you to calculate the value of e to the power of x. But this can really be interpreted as 2 times x So for example, if someone says 2 dot x, when x is equal to 3, well this would be the same thing as two times three, when x is equal to three. In the same way, we can show the distributive law for exponentiation: (xy)a = (xy) × (xy) × ⋯ × (xy) ⏟ a times = x × x × ⋯ × x ⏟ a times × y × y × ⋯ × y ⏟ a times = xaya. Example: x+y=7;. What does x times x equal?. The key to this lesson is to realize that an exponent tells us to multiply a number. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Also, x squared = x 2. He takes 2 paces at a time, and does this three times, so he moves 2 steps x 3 = 6 steps forward: Now, Baby Steven can also step backwards (he is a clever little guy). For example, (3 + 5)2 = 82 = 64, but this is NOT equal to 32 + 52 = 9 + 25 = 34. When multiplying variables in algebra which are the same, you can solve it by adding the exponents. So theres two situations where this could happen,. tan(x y) = (tan x tan y) / (1 tan x tan y). What does x plus x equal?. Thus, x squared times x squared is x 2 × x 2 = x 4. X: times: X. Similarly, when we describe an expression in words that includes a variable, were describing an algebraic expression (an expression with a variable). What is x times x equal to in algebra? To solve x multiplied by x, try to observe the pattern created by letting x be any number. X Times X Squared Calculator for algebra manipulations. What is $x //times //sqrt x$. When the cosine of y is equal to x: cos y = x. If all of the terms in the two. Multiplying Negatives Makes A Positive>Multiplying Negatives Makes A Positive. If yes, then you can force the equation equal to 0. And by some kind of definition, this equals the squared length of the vector in a euclidian sense. X Times X Squared Calculator. In words: x times x equals x squared. Step By Step X Times X calculator. In contrast, 2x means x is multiplied by 2. Example: x+y=7; x+2y=11 @ (3,4). 2X would be X + X. Keep on reading to know what does e equal to and. Solve for x: 3e^ {3x} /cdot e^ {-2x+5}=2 3e3x⋅e−2x+5 =2. Enter the 2 factors to multiply and press the Calculate button: First factor. Detailed step by step solution for e^{-x}/times e^{-x} Analytics Cookies allow us to understand how visitors use our Services. Solved X Times Examples: 12x X 2x = ? 12x X 2x = 24x 2. Why arent we using the multiplication sign?. For example, in the problem 10x - 5 equals 15, you need to figure out what the x stands for in order to make the equation true. His Dad puts him back at the start and then Steven steps backwards 2 steps, and does this three times:. It would equal 4X + 2, because when doing algebra you can only add things called like terms so you can only add things like 2y+7y and 4yz+2yz or 4+3. How do you write X times 2? To write “X times 2” in a sentence, you would write “X * 2”. They are known as exponential functions such as e x, 10 x, a n d a x. At this point, what Im doing is kind of unnecessary. Watch Super Bowl LVII live on. We know the amount of water in the tank changes by −1,000 every day, and we need to subtract that 3 times (to go back 3 days ), so the change is: −3 × −1,000 = +3,000 The full calculation is: 30,000 + (−3 × −1,000) = 30,000 + 3,000 = 33,000 So 3 days ago there were 33,000 liters of water in the tank. Multiplying negative numbers review (article). As follows. Well, maybe not force but you can rearrange the equation such that you will have the quadratic in the form Ax^2 + Bx^2 + C = 0. The e calculator helps you to calculate the value of e to the power of x. Negative numbers Calculator & Problem Solver. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. The answer is -2 x -4 = 8. cos(x)sin(x) = sin(2x) 2 Explanation: So we have cos(x)sin(x) If we multiply it by two we have 2cos(x)sin(x) Which we can say its a sum cos(x)sin(x) + sin(x)cos(x) Which is the double angle formula of the sine cos(x)sin(x) + sin(x)cos(x) = sin(2x). However, these should not be confused with lnx2 which is equal to 2lnx There is only one condition where ln2x = lnx2 set out below. Basic rules for exponentiation. Whereas 2x is 2 “x”s which is twice x. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History. All other things being roughly equal, a 2x zoom will have better optical quality than a 8x zoom. What is x squared times x squared?. This function f (x) =7x−5 means that each time we plug in a value of x we would multiply it by 7 then subtract 5. , x squared equals x multiplied by itself. What is x times x equal to in algebra? To solve x multiplied by x, try to observe the pattern created by letting x be any number. Last but not least if one is interested in how much the linear map represented by A changes the norm of a vector one can compute A x, A x = A T A x, x. sin ^2 (x) + cos ^2 (x) = 1. Variables in Algebra: When youre doing a math problem and are working with a number you dont yet know, you use a variable in place of the number. x T A A T x = ( A T x) T ( A T x) > 0 Then we have: A matrix is positive definite if and only if its the Gram matrix of a linear independent set of vectors. Tap for more steps y xy + x xy y x y + x x y. Calculate it! Examples: 1+2 , 1/3+1/4 , 2^3 * 2^2 (x+1) (x+2) (Simplify Example), 2x^2+2y @ x=5, y=3 (Evaluate Example) y=x^2+1 (Graph Example), 4x+2=2 (x+6) (Solve Example) Algebra Calculator is a calculator that gives step-by-step help on algebra problems. And then they ask us to find f times g of x So the first thing to realize is that this notation f times g of x is just. Solve the system: /begin {array} {l} {/frac {2} {9} /cdot x-5y = /frac {1} {9}} //. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. x times x equals x^2, or x squared. See More Examples » x+3=5 1/3 + 1/4 y=x^2+1 Disclaimer: This calculator is not perfect. What is x multiplied by 2x?. Get Chegg Math Solver. In order to show that T is a function, you need to prove that for each pair of subsets A and B of X there is one and only one subset U of X/times X such that T(A,B)=U, that is, ((A,B),U) /in T What is the right norm for the Banach space tensor product in this situation?. If x is equal to 6 and the relation ship between y and x can be shown by the relation y is equal to four times x, y must equal 6 multiplied by. Detailed step by step solution for e^{-x}/times e^{-x} Analytics Cookies allow us to understand how visitors use our Services. Want to learn more about multiplying negative numbers? Check out this video. The precedence from high to low is AND, XOR, OR. To solve x plus x, imagine the variable x as a familiar object, for example an apple. More formally we have: Which says the absolute value of x equals: x when x is greater than zero. 2x X 6x = ? 2x X 6x = 12x 2. tan(2x) = 2 tan(x) / (1. This function f (x) =7x−5 means that each time we plug in a value of x we would multiply it by 7 then subtract 5. The following notation is used for Boolean algebra on this page, which is the electrical engineering notation: False: 0. Everything is a tradeoff, and zoomability is not free, both in $ to allow for the zooming and in optical quality. X 1/2 = root x so when you see x 2/2 is the same as (root x) 2 or root (x 2 )so it does make sense. In order to simply ‘multiply’ or ‘times’ a given number, you add the given number to itself a number of times, for instance, 4 multiplied by 3 is the same as saying 4 + 4 + 4 = 12. So, when you multiply or divide negatives, you are basically multiplying positives with minus signs behind them. x is greater than or equal to 2x. In math terms: x*x = x^2 In words: x times x equals x squared. 2, times, left parenthesis, minus, 3, right parenthesis, equals, minus, 6. A negative times a positive will always equal a negative number. sin ^2 (x) + cos ^2 (x) = 1. And then they ask us to find f times g of x So the first thing to realize is that this notation f times g of x is just referring to a function that is a product of f of x and g of x. What Is X Times 2x? – Thelma Thinks. Algebra Solve for x Calculator Step 1: Enter the Equation you want to solve into the editor. cot ^2 (x) + 1 = csc ^2 (x). x squared is a notation that is used to represent the expression x ×x x × x. Multiplication Calculator. The arccosine of x is defined as the inverse cosine function of x when -1≤x≤1. f of x is equal to 7x minus 5. When the cosine of y is equal to x: cos y = x Then the arccosine of x is equal to the inverse cosine function of x, which is equal to y: arccos x = cos -1 x = y Example arccos 1 = cos -1 1 = 0 rad = 0° See: Arccos function Cosine table See also Cos calculator. x times x= x2 It is X squared. Consider the number x defined by x = ab + (-a) (b) + (-a) (-b). By one of the rules of exponents in algebra, x m · x n = x m + n. Step 2: Click the blue arrow to submit and see the result!. Solve advanced problems in Physics, Mathematics and Engineering. sin(x y) = sin x cos y cos x sin y. Scientific calculator online with fraction. f (x)=7x−5 → This our function with just x. Wiki User ∙ 2011-04-10 00:05:19 This answer is: Study guides Algebra 20 cards A polynomial of degree zero is a constant term The grouping method of. Multiplying by itself raises the power by 1. – fkraiem Feb 2, 2014 at 1:41 3 x is the number satisfying x x = x; its not the opposite of multiplying by x. 4x X 2x = ? 4x X 2x =8 2. [remember x = x^1]: x*x = x^2 x^2*x = x^3 2x*x = 2*x*x = 2* (x*x) = 2* (x^2) = 2x^2 Guest Mar 3, 2015 16 +18 Answers #1 +17. They are known as exponential functions such as e x, 10 x, a n d a x. Negative x Negative = Positive? Abstract Proofs. x: sample mean: average / arithmetic mean : x = (2+5+9) / 3 = 5. You already understand that negative 7 times some number is always going to be negative 7 times that number. Example: x+y=7; x+2y=11 @ (3,4). If you want the operation between two symbols to be something else, like plus, you have to say it explicitly. What is x times x equal to in algebra? To solve x multiplied by x, try to observe the pattern created by letting x be any number.