Answer
$x^2-1$
Work Step by Step
$(x-1)(x+1)$
This can be expressed as a difference of two squares, so the answer is:
$x^2-1$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.4 - Polynomials - R.4 Assess Your Understanding - Page 48: 68
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