Precalculus Examples

$\sqrt[3]{x^{6} y^{21}}$

Step 1

Rewrite $x^{6} y^{21}$ as ${(x^{2} y^{7})}^{3}$ .

$\sqrt[3]{{(x^{2} y^{7})}^{3}}$

Step 2

Pull terms out from under the radical, assuming real numbers.

$x^{2} y^{7}$