Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.5 Rational Expressions - R.5 Exercises - Page 53: 49

Answer

B and C.

Work Step by Step

Based on the given conditions, expressions B and C can be simplified: B. $\frac{-x-4}{x+4}=\frac{-(x+4)}{x+4}=-1$ C. $\frac{x-4}{4-x}=\frac{x-4}{-(x-4)}=-1$ Thus the answers are B and C.
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