Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 2 - Section 2.7 - Polynomial and Rational Inequalities - Exercise Set - Page 414: 87

Answer

$[-3,\frac{1}{2}]$
1582379296

Work Step by Step

Step 1. Graph the function $f(x)=2x^2+5x-3$ as shown in the figure. Step 2. The zeros of the function can be identified as $x=-3,\frac{1}{2}$ Step 3. We can identify the regions where $f(x)\leq0$ as $[-3,\frac{1}{2}]$
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