Answer
-3 < x < 9
Work Step by Step
$x^2 -6x - 27 < 0$
$(x-9)(x+3) < 0$
$-3 < x < 9$ ( The key numbers are -3 and 9. The interval between them is the only one that satisfies the inequality. Check for a value in that interval say 1. )
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - Review Exercises - Page 154: 111
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