Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 8 Rational Functions - Extension - Solve Rational Inequalities - Practice - Page 600: 2

Answer

$x<-3$

Work Step by Step

Rewrite the inequality so that the one side is zero. $\frac{x-5}{x+3}>1$ (Substract both sides with 1) $\frac{x-5}{x+3}-1>0$ Set $y=\frac{x-5}{x+3}-1$ and create a table of values of $x$ and $y$ for some values of $x$. The solution to the inequality is the values of $x$ which satisfies $y>0$. $\begin{matrix} \hline x&y\\ \hline -5&4.0\\ -4&8.0\\ -3&\text{Error}\\ -2&-8.0\\ -1&-4.0\\ \hline \end{matrix}$ In the table, we get $y>0$ for $x<-3$ and $y<0$ for $x>-3$. Thus, the solution to the inequality is $x<-3$.
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