Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Section 7.3 - Simplifying Radical Expressions - Exercise Set: 38

Answer

$2\sqrt 5$

Work Step by Step

$\sqrt 20=\sqrt (4\times5)=\sqrt 4 \times\sqrt 5=2\sqrt 5$ We know that $\sqrt 4=2$, because $2^{2}=4$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.