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

Something to remember is how to multiply terms with same bases, but different exponents:

$a^b \cdot a^c = a^{(b+c)}$

Essentially, we add the exponents.

Using the information above, we can find our answer:

$5^4 \cdot 5^8 = 5^{(4+8)} = \boxed{5^{12}}$

Our answer is $\boxed{5^{12}}$, or A.

Answer 2

It equals 5^12

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