Answer
(x + 2)(x - 2)
Work Step by Step
$x^{2} - 4$
Compare the given expression with the generalized form:
$a^{2} - b^{2}$ = (a + b)(a - b).
Here, a=x and b = 2.
Thus,
$x^{2} - 4$ = (x + 2)(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 7 - Cumulative Review - Page 565: 38
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