What is 9x times 39x?

9x × 39x = ?

Here we will do more than give you the solution to 9x × 39x. 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, 9 and 39 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:

9 × x × 39 × x =

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

9 × 39 = 351

x × x = x²

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

9x × 39x = 351x²

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:

9x × 39x² = 351x³

9x × 39x³ = 351x⁴

9x × 39x⁴ = 351x⁵

9x² × 39x = 351x³

9x² × 39x² = 351x⁴

9x² × 39x³ = 351x⁵

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What is 9x times 40x
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