## College Algebra (11th Edition)

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: $\sqrt[3] 3\times \sqrt[3] 9 = \sqrt[3] {27}=\sqrt[3] {3^3}=3$