Answer
$\{31\}$
Work Step by Step
Step 1. Given the equation $\sqrt[4] {x-15}=2$
Step 2. Raise to the 4th power on both sides to get: $x-15=16$ which gives $x=31$
Step 3. Check answer in the original equation: $\{31\}$ fits.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
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 148: 71
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