Answer
2, -2, 3, -3
Work Step by Step
$(x^2-9)(x^2-4)=0$ (Factor as if quadratic)
(x-3)(x+3)(x-2)(x+2)=0
Hence x = {2, -2, 3, -3}
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.6 - Other Types of Equations - 1.6 Exercises - Page 128: 18
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