Answer
$x=20$
Work Step by Step
$\sqrt {5x}-10=0$
$\sqrt {5x}=10~~$ (Square both sides)
$(\sqrt {5x})^2=10^2$
$5x=100$
$x=\frac{100}{5}=20$
Check the solution:
$\sqrt {5(20)}-10=\sqrt {100}-10=10-10=0$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.6 - Other Types of Equations - 1.6 Exercises - Page 128: 31
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