Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 7 - Cumulative Review: 38

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).
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