Answer
$\frac{2}{7}$.
Work Step by Step
The given expression is
$=\sqrt{\frac{4}{49}}$
Use quotient property of square roots.
$=\frac{\sqrt{4}}{\sqrt{49}}$
Use $4=2^2$ and $49=7^2$.
$=\frac{\sqrt{2^2}}{\sqrt{7^2}}$
Simplify.
$=\frac{2}{7}$.
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 9 - Solving Quadratic Equations - 9.1 - Properties of Radicals - Exercises - Page 485: 21
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