Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 1 - Precalculus Review - 1.1 Real Numbers, Functions, and Graphs - Exercises - Page 10: 24

Answer

$-1

Work Step by Step

Start by considering the sign of the numerator and the denominator separately. For the fraction to be less than 0, or negative, either the numerator or the denominator needs to be negative while the other one is positive. $x\ne-1$ because it would result in an undefined denominator.
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