Answer
$12x^5-28x^3+28x^2$
Work Step by Step
Using the Distributive Property, the given expression, $
4x^2(3x^3-7x+7)
,$ is equivalent to
\begin{array}{l}\require{cancel}
4x^2(3x^3)+4x^2(-7x)+4x^2(7)
\\\\=
12x^5-28x^3+28x^2
.\end{array}
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