Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.6 - Radical Equations and Problem Solving - Exercise Set - Page 728: 25

Answer

$x=50$

Work Step by Step

$-\sqrt {2x}+4=-6$ $-\sqrt {2x}+4-4=-6-4$ $-\sqrt {2x}=-10$ $-1*-\sqrt {2x}=-10*-1$ $\sqrt {2x}=10$ $(\sqrt {2x})^2=10^2$ $2x=100$ $2x/2=100/2$ $x=50$ $-\sqrt {2x}+4=-6$ $-\sqrt {2*50}+4=-6$ $-\sqrt {100}+4=-6$ $-10+4=-6$ $-6=-6$ (true)
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