Answer
$x = -3$
Work Step by Step
$x^3 + 27 = 0$
$x^3 + 27 - 27 = -27 $
$x ^3 = -27 $
$\sqrt[3] {x^3} = \sqrt[3] {-27}$
$x = -3$
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 - 1.4 Quadratic Equations - 1.4 Exercises - Page 122: 69
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