Resposta :
[tex]\frac{xy}{\sqrt[3]{x^2y^2}} \cdot \frac{\sqrt[3]{xy}}{\sqrt[3]{xy}} = \frac{xy\ \cdot \sqrt[3]{xy}}{\sqrt[3]{x^2y^2} \cdot \sqrt[3]{xy}} = \frac{xy\ \cdot \sqrt[3]{xy}}{\sqrt[3]{x^3y^3}}[/tex]
[tex]\frac{xy\ \cdot \sqrt[3]{xy}}{\sqrt[3]{x^3y^3}} = \frac{xy\ \cdot \sqrt[3]{xy}}{xy} = \sqrt[3]{xy}[/tex]