Answer
$3$
Work Step by Step
RECALL:
For a positive real number $a$:
$\sqrt{a^2}=a$
Substitute $2$ in for $x$ and $1$ in for $y$ to obtain:
$=\sqrt{2^2}+\sqrt{1^2}$
Use the rule above to obtain:
$=2+1
\\=3$
College Algebra (10th Edition)
by Sullivan, Michael
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 - Page 28: 106
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
