Answer
$2x^{3}(2x-1)(2x+1)$
Work Step by Step
$ 8x^{5}-2x^{3}\qquad$...factor out the common term, $2x^{3}$
$=2x^{3}(4x^{2}-1)\qquad$...recognize the difference of two squares: $a^{2}-b^{2}=(a-b)(a+b)$
$=2x^{3}(2x-1)(2x+1)$
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