What is 18x times 4x?

18x × 4x = ?

Here we will do more than give you the solution to 18x × 4x. 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, 18 and 4 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:

18 × x × 4 × x =

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

18 × 4 = 72

x × x = x²

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

18x × 4x = 72x²

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:

18x × 4x² = 72x³

18x × 4x³ = 72x⁴

18x × 4x⁴ = 72x⁵

18x² × 4x = 72x³

18x² × 4x² = 72x⁴

18x² × 4x³ = 72x⁵

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