Question

This is the question I am stuck on

Answer 1

a^ 8 / b^12

Explanation:

We know that x^y / x^z = x^ (y-z)

a^-5 b^-4

----------------

a^ -13 b^8

a^ (-5 - -13) b ^ (-4 -8)

a^ (-5+13) b^ (-4-8)

a^ 8 b^ (-12)

We know that x ^ - y = 1/ x^y

a^ 8 / b^12