Answer
The answer should be positive.
Work Step by Step
Solving the problem correctly, we find:
$$8x^3=27 \\ x^3=\frac{27}{8} \\ x=\frac{3}{2}$$
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 5 Polynomials and Polynomial Functions - 5.4 Factor and Solve Polynomial Equations - 5.4 Exercises - Skill Practice - Page 357: 30
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