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

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. )

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