Answer
$x=9$
Work Step by Step
Solve for $x$:
$$\sqrt {5x-9}=\sqrt{4x}$$ $${5x-9}={4x}$$ $$5x-4x=9$$ $$x=9$$
Check the solution:
$$\sqrt {5(9)-9}\stackrel{?}{=}\sqrt{4(9)}$$ $$\sqrt {36}\stackrel{?}{=}\sqrt{36}$$ $$6=6\checkmark$$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 10 - Radical Functions and Equations - Chapter Review - Page 577: 12
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