Answer
$100x^{4}3y^{3}$
Work Step by Step
$(10x^{2}y)^{2}(3y)$
$=(10^{2})[(x^{2})^2](y^{2})(3y)$
$=(10\times10)(x^{2\times2})(3y^{3})$
$=(100)(x^{4})(3y^{3})$
$=100x^{4}3y^{3}$
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