College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 3 - Section 3.1 - Functions - 3.1 Assess Your Understanding - Page 213: 121

Answer

$x=2$ or $x=-3$ or $x=3$

Work Step by Step

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