Answer
2$\sqrt 7$
Work Step by Step
We can pull out $\sqrt 4$ which equals 2. That leave us with 2$\sqrt 7$. In mathematical terms:
$$ \sqrt{28} = \sqrt{4} \sqrt{7} = 2 \sqrt{7}$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - 4.5 Solve Quadratic Equations by Finding Square Roots - 4.5 Exercises - Skill Practice - Page 269: 3
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