Answer
The solution is $x=\frac{9}{2}$.
Work Step by Step
$\sqrt 2x+4=7$
$\sqrt 2x=3$
Square both sides:
$2x=9$
$x=\frac{9}{2}$
Check:
$\sqrt 2(\frac{9}{2})+4=7$
$7=7$
The solution is $x=\frac{9}{2}$.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 10 - Radical Expressions and Equations - Chapter Test - Page 657: 16
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