Answer
$\frac{-2\sqrt a^3}{a^3}$
Work Step by Step
Rationalize the denominator by multiplying $\sqrt a^3$ to the numerator and denominator.
$\frac{-2}{\sqrt a^3}\times\frac{\sqrt a^3}{\sqrt a^3}$
Simplify
$\frac{-2\sqrt a^3}{a^3}$
Answer: $\frac{-2\sqrt a^3}{a^3}$
