Answer
Key, test intervals
Work Step by Step
The zeroes are the key numbers of the inequality, and the resulting intervals obtained are the test intervals for the inequality.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.8 - Other Types of Inequalities - 1.8 Exercises - Page 147: 2
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