Answer
$8\sqrt5$
Work Step by Step
$\frac{40}{\sqrt{5}}$
Rationalize the denominator,
$\frac{40}{\sqrt{5}}\times\frac{\sqrt{5}}{\sqrt{5}}$
Simplify.
$\frac{40\sqrt{5}}{5}$
Reduce. Divide the numerator and denominator by greatest common factor of 5.
$8\sqrt5$
