Answer
For any nonzero real number $a$, $a^{-m} = \dfrac{1}{a^m}$, where $m \gt 0$ .
Example:
$3^{-2} = \dfrac{1}{3^2}$
Work Step by Step
For any nonzero real number $a$, $a^{-m} = \dfrac{1}{a^m}$, where $m \gt 0$ .
Example:
$3^{-2} = \dfrac{1}{3^2}$
