Answer
16 - 49$x^{2}$
Work Step by Step
( 4 - 7x ) ( 4 + 7x ) the som and difference of the same two terms
$4^{2}$ - $( 7x )^{2}$
16 - 49$x^{2}$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.6 - Special Products - Exercise Set - Page 388: 49
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