7x × 8x = ?


Here we will do more than give you the solution to 7x × 8x. We will also explain and teach you how we came up with the answer, so you can understand it and solve similar problems in the future without help.

In this problem, 7 and 8 are the coefficients and two Xs are the variables. When a coefficient is next to a variable there is an invisible multiplication sign. So you could rewrite the problem as follows:

7 × x × 8 × x =

So now you can multiply what are the same. You can multiply the coefficients together and the x variables together as follows:

7 × 8 = 56

x × x = x2

Then you put the answers together and make the multiplication sign invisible again to get the following answer:

7x × 8x = 56x2


If you multiply two same variables with exponents, you simply keep the variable and add the exponents. Also x with no exponent is the same as x1.

Here are some problems with answers that you should know based on what you learned on this page:

7x × 8x2 = 56x3

7x × 8x3 = 56x4

7x × 8x4 = 56x5

7x2 × 8x = 56x3

7x2 × 8x2 = 56x4

7x2 × 8x3 = 56x5


X times X Calculator
For other numbers, go here for our popular "X times X Calculator.

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