Answer
$-27$
Work Step by Step
Apply the rule: $a^{\frac{m}{n}}=(a^{\frac{1}{n}})^m$
$-81^{\frac{3}{4}}=-(81^{\frac{1}{4}})^3$
Perform the rational expression and simplify.
$-81^{\frac{3}{4}}=-(3)^3=-27$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter R - Section R.6 - Rational Exponents - R.6 Exercises - Page 56: 53
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.
