Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 6 - Rational Expressions and Equations - 6.6 Rational Equations - 6.6 Exercise Set - Page 417: 70

Answer

1

Work Step by Step

Recall, the only numbers whose reciprocal is itself are $1$ and $-1$. Note, zero does not count, for its reciprocal has zero in the denominator and is thus undefined.
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