Answer
3
Work Step by Step
First, by using the quotient rule, we simply divide the two radicals in the fraction:
$\frac{\sqrt[3] {15}}{\sqrt[3] {5}}=\sqrt[3] {3}$
After that, by using the product rule we multiply this value by the third radical:
$\sqrt[3] 3\times \sqrt[3] 9 = \sqrt[3] {27}=\sqrt[3] {3^3}=3$
