Answer
$\frac{1}{a^2}$
Work Step by Step
You are given $\frac{a^4}{a^6}$.Simplify the expression:
$a^{4-6}$ -since you are dividing power with the same base you subtract the exponents-
$a^{-2}$ -use the exponent rule $x^{-y}$=$\frac{1}{x^y}$
=$\frac{1}{a^2}$
