## Intermediate Algebra for College Students (7th Edition)

$(x+y)\sqrt[3]{(x+y)^2}$
RECALL: $\sqrt[3]{a^3}=a$ Factor the radicand (expression inside the radical sign) so that at least one factor is a perfect cube, and then use the rule above to simplify and obtain: $=\sqrt[3]{(x+y)^3\cdot (x+y)^2} \\=(x+y)\sqrt[3]{(x+y)^2}$