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

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: $$ \sqrt{28} = \sqrt{4} \sqrt{7} = 2 \sqrt{7}$$

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