#### Answer

$\sqrt[3] 5$

#### Work Step by Step

We break up the square roots, and then we cancel out common factors in the numerator and the denominator of the fraction to obtain:
$\frac{\sqrt[3] {40}}{\sqrt[3] 8}$
=$\frac{\sqrt[3] {8\times5}}{\sqrt[3] 8}$
=$\frac{\sqrt[3] {8}\times\sqrt[3] 5}{\sqrt[3] 8}$
=$\frac{1\times\sqrt[3] 5}{1}$
=$\sqrt[3] 5$