Answer
$\frac{2\sqrt x}{x}$
Work Step by Step
$\sqrt \frac{4}{x}=\frac{\sqrt 4}{\sqrt x}=\frac{\sqrt4 \times \sqrt x}{\sqrt x \times \sqrt x}=\frac{2\sqrt x}{x}$
We know that $\sqrt 4=2$, because $2^{2}=4$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Section 7.5 - Rationalizing Denominators and Numerators of Radical Expressions - Exercise Set - Page 445: 5
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