Precalculus (6th Edition)

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

Chapter 1 - Equations and Inequalities - 1.6 Other Types of Equations and Applications - 1.6 Exercises - Page 146: 9


Option $E$

Work Step by Step

The equation involves a trinomial with rational exponents. Thus, the first step to solve the equation is to let $u=(x+5)^{1/3}$, which means that $u^2=(x+5)^{2/3}$. Therefore, the answer is Option $E$.
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