Answer
$\frac{2\sqrt6}{3}$.
Work Step by Step
The given expression is
$=\frac{4}{\sqrt6}$
Multiply the numerator and the denominator by $\sqrt 6$.
$=\frac{4}{\sqrt6}\cdot \frac{\sqrt{6}}{\sqrt6}$
Use product rule.
$=\frac{4\sqrt6}{6}$
Simplify.
$=\frac{2\sqrt6}{3}$.
