Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 3 - Section 3.7 - Polynomial and Rational Inequalities - 3.7 Exercises - Page 316: 27

Answer

$[-8,-5/2)$

Work Step by Step

1. move all terms to one side: $\frac{x-3}{2x+5}-1=\frac{x-3-2x-5}{2x+5}=\frac{-x-8}{2x+5}$ $f(x)=-\frac{x+8}{2x+5}\geq0$ 2. make a table of signs as shown. 3. The solution is $[-8,-5/2)$
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