Answer
Option (b)
Work Step by Step
Write $64$ as $8^2$ to obtain:
$=x^2-8^2$
The expression above is a difference of two squares.
Thus, the answer is Option (b).
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 Assess Your Understanding - Page 57: 4
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