Answer
$$x=-1,\:x=-2,\:x=2$$
Work Step by Step
Factoring the equation and setting the factors equal to zero, we find:
$$-\left(x^3+x^2-4x-4\right) \\ -\left(x+1\right)\left(x+2\right)\left(x-2\right) \\x=-1,\:x=-2,\:x=2$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 11 - Polynomial and Rational Functions - 11.3 The Short-Run Behavior of Plynomials - Exercises and Problems for Section 11.3 - Skill Refresher - Page 454: S6
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