College Algebra (6th Edition)

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

Chapter 1 - Summary, Review, and Test - Review Exercises - Page 205: 99


x=-3, 3, or -2

Work Step by Step

x$^3$+2x$^2$=9x+18 x$^3$+2x$^2$-9x-18=0 x$^2$(x+2)-9(x+2)=0 (x$^2$-9)(x+2)=0 (x+3)(x-3)(x+2)=0 x=-3, 3, or -2
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