Question

Which expression is equal to 5^4 x 5^8 ?

A: 5^12
B: 5^4
C: 5^2
D: 5^−4

Answer 1

So the rule with multiplying exponents with the same base is to just add the exponents together.

$5^4*5^8=5^{4+8}=5^{12}$

Your answer is going to be 5^12, or A.

Answer 2

The answer to the question is a.