Answer
$6p^3\sqrt{2p}$
Work Step by Step
The give expression is
$=\sqrt{72p^7}$
Factor as square terms.
$=\sqrt{36p^6\cdot 2p}$
Use product property of square roots.
$=\sqrt{36p^6}\cdot \sqrt{2p}$
Simplify.
$=6p^3\sqrt{2p}$
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