College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.2 - Algebra Essentials - R.2 Assess Your Understanding: 103

Answer

$2$

Work Step by Step

RECALL: For a positive real number $a$: $\sqrt{a^2}=a$ Substitute $2$ in for $x$ to obtain: $=\sqrt{2^2}$ Use the rule above to obtain: $\sqrt{2^2}=2$
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.