Answer
(a) Impossible: the denominator can not be equal to $0$.
(b) $0$
Work Step by Step
$\frac{x+1}{x-1}$
(a) $\frac{1+1}{1-1}=\frac{2}{0}$. Impossible: the denominator can not be equal to $0$.
(b) $\frac{-1+1}{-1-1}=\frac{0}{-2}=0$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - P.1 - Review of Real Numbers and Their Properties - Exercises - Page 13: 63
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