Answer
$2(1-2x)(1+2x)$
Work Step by Step
Factor out $2$ to obtain:
$=2(1-4x^2)
\\=2[1^2-(2x)^2]$
RECALL:
$a^2-b^2=(a-b)(a+b)$
Use the formula above with $a=1$ and $b=2x$ to factor the binomial and obtain:
$=2(1-2x)(1+2x)$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.5 - Factoring Polynomials - R.5 Exercises - Page 58: 81
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