College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.8 - Solving Basic Equations - P.8 Exercises: 67

Answer

$\left\{-2, 2\right\}$

Work Step by Step

Add 16 on both sides of the equation to obtain: $x^4=16$ Write $16$ as $2^4$ to obtain: $x^4=(2)^4$ Take the fourth root of both sides to obtain: $x = \pm \sqrt[4]{2^4} \\x = \pm 22$ Thus, the solution set of the given equation is $\left\{-2, 2\right\}$.
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