what does (2x) cubed equal?

Question

im not sure the rules for exponents when i have a parenthetical expression

Answer 1

when you raise a power to a power you multiply the powers.

 

cubed means raised to the power 3

 

(2x)³

(2¹ * x¹)³

2^(1*3) * x^(1*3)

2³  *  x³

yes 8x³

Answer 2

Rules are simple for parentheses:

Everything in the parentheses gets powered:

You have (2x)³:

Which is the same as: (2 * x)³:

Which is the same as: (2³ * x³):

Now the answer is:

 

8x³