What is 4x times 5x?

4x × 5x = ?

Here we will do more than give you the solution to 4x × 5x. 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, 4 and 5 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:

4 × x × 5 × x =

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

4 × 5 = 20

x × x = x²

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

4x × 5x = 20x²

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:

4x × 5x² = 20x³

4x × 5x³ = 20x⁴

4x × 5x⁴ = 20x⁵

4x² × 5x = 20x³

4x² × 5x² = 20x⁴

4x² × 5x³ = 20x⁵

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

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