Precalculus (6th Edition)

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

Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.2 Exponential Functions - 4.2 Exercises: 90

Answer

$-32$

Work Step by Step

$x^{7/5}=-128\Rightarrow \left( \sqrt [5] {x}\right) ^{7}=\left( -2\right) ^{7}\Rightarrow \sqrt [5] {x}=-2\Rightarrow x=\left( -2\right) ^{5}=-32$
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