Answer
$2xy^2\sqrt[3]{5xy}$
Work Step by Step
since, we have to simplify. $\sqrt[3]{40x^4y^7}=\sqrt[3]{8x^3y^6 \cdot (5xy)}$
or, $=\sqrt[3]{2^3x^3y^6} \sqrt[3]{5xy}$
or, $=2xy^2\sqrt[3]{5xy}$
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