Answer
$$x=\pm \sqrt[4] 8$$
Work Step by Step
Solving the equation by isolating the variable and using radicals, we find:
$$7x^4=56 \\ x^4=8 \\ x=\pm \sqrt[4] 8$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 6 Rational Exponents and Radical Functions - 6.1 Evaluate nth Roots and Use Rational Exponents - 6.1 Exercises - Skill Practice - Page 418: 55
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