Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - Test - Page 181: 10

Answer

$-2$

Work Step by Step

Step 1. Raise both sides to the 3rd power, we have $3x-8=9x+4 \longrightarrow -12=6x$, thus $x=-2$ Step 2. Check the answer in the original equation and we find it fits, thus the solution is $x=-2$
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