#### Answer

$4x^2(5x^2-2)$

#### Work Step by Step

Factor out the greatest common factor, which is $4x^2$, to obtain:
$20^4-8x^2=4x^2(5x^2-2)$

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Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$4x^2(5x^2-2)$

Factor out the greatest common factor, which is $4x^2$, to obtain:
$20^4-8x^2=4x^2(5x^2-2)$

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