Intermediate Algebra (6th Edition)

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

Chapter 10 - Cumulative Review - Page 634: 16

Answer

$x=\dfrac{4}{3}$

Work Step by Step

The values of $x$ in the equation $ \dfrac{2}{x+3}=\dfrac{1}{x^2-9}-\dfrac{1}{x-3} $ are \begin{array}{l} \dfrac{2}{x+3}=\dfrac{1}{(x+3)(x-3)}-\dfrac{1}{x-3} \\\\ (x+3)(x-3)\left( \dfrac{2}{x+3} \right) =\left( \dfrac{1}{(x+3)(x-3)}-\dfrac{1}{x-3} \right)(x+3)(x-3) \\\\ (x-3)(2)=1(1)-1(x+3) \\\\ 2x-6=1-x-3 \\\\ 2x+x=1-3+6 \\\\ 3x=4 \\\\ x=\dfrac{4}{3} .\end{array}
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