Answer
$$1$$ $$and$$$$-1$$
Work Step by Step
$x^{2}-1=0$
$x^{2}-1+1=0+1$
$x^{2}=1$
$x=\pm \sqrt 1$
$x=\pm (1)$
Thus, the answer is +1 and -1
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 0 - Section 0.2 - Exponents and Radicals - Exercises - Page 17: 108
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