Answer
$(1-7x)(1+7x)$
Work Step by Step
$1-49x^{2}$
$\qquad$...use the formula for the difference of two squares: $a^{2}-b^{2}=(a-b)(a+b), a=1, b=7x$
$=(1-7x)(1+7x)$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 6 - Section 6.4 - Factoring Special Forms - Concept and Vocabulary Check - Page 453: 9
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