What is 15x times 2x?

15x × 2x = ?

Here we will do more than give you the solution to 15x × 2x. 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, 15 and 2 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:

15 × x × 2 × x =

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

15 × 2 = 30

x × x = x²

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

15x × 2x = 30x²

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:

15x × 2x² = 30x³

15x × 2x³ = 30x⁴

15x × 2x⁴ = 30x⁵

15x² × 2x = 30x³

15x² × 2x² = 30x⁴

15x² × 2x³ = 30x⁵

X times X Calculator
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