Answer
$- \frac{8}{7}$
Work Step by Step
Recall the following rule: $\sqrt{x^{2}}=x$. Thus, we obtain:
$-\sqrt \frac{64}{49}=-\sqrt \frac{8^{2}}{7^{2}}=- \frac{\sqrt {8^{2}}}{\sqrt {7^{2}}}=- \frac{8}{7}$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 9 - Roots and Radicals - Chapter 9 Test - Page 431: 1
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.
