Answer
$$ \frac{1}{x(3+x^2)}$$
Work Step by Step
First, we recall:
$$ a^{-b} = \frac{1}{a^b}$$
Simplifying the given expression, this gives:
$$ \frac {1} {x^2(x + \frac{3}{x})}$$
Next, we simplify using the distributive property to find:
$$ \frac{1}{x(3+x^2)}$$
