College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 3 - Polynomial and Rational Functions - Exercise Set 3.5 - Page 410: 135


$x=-1$, $x=-2$ or $x=2$.

Work Step by Step

$x^3+x^2=4x+4\\x^3+x^2-4x-4=0\\x^2(x+1)-4(x+1)=0\\(x+1)(x^2-4)=0\\(x+1)(x+2)(x-2)=0$ Thus $x=-1$, $x=-2$ or $x=2$.
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