Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 10 - Cumulative Review - Page 634: 43

Answer

$\text{the interval } [-2,3]$

Work Step by Step

Equating each factor to zero results to \begin{array}{l} x+2=0\\ x=-2 ,\\\\\text{OR}\\\\ x-3=0\\ x=3 .\end{array} Hence, the critical points are $x=\{-2,3\}$. If $x\lt-2$, then, \begin{array}{l} \dfrac{x+2}{x-3} \\\Rightarrow \dfrac{(-)}{(-)} \\= \text{ positive} .\end{array} If $-2\lt x\lt3$, then, \begin{array}{l} \dfrac{x+2}{x-3} \\\Rightarrow \dfrac{(+)}{(-)} \\= \text{ negative} .\end{array} If $x\gt3$, then, \begin{array}{l} \dfrac{x+2}{x-3} \\\Rightarrow \dfrac{(+)}{(+)} \\= \text{ positive} .\end{array} Since the given inequality uses $\le0$, then take the negative result. Hence, the solution set is $ \text{the interval } [-2,3]. $
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.