Answer
$-3 $ $and $ $3$
Work Step by Step
$x^{4}-81=0$
$x^{4}=81$
$(x^{4})^{\frac{1}{4}}=\pm 81^{\frac{1}{4}}$
$(x^{4})^{\frac{1}{4}}=\pm (3^{4})^{\frac{1}{4}}$
$x=\pm 3$
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 0 - Section 0.2 - Exponents and Radicals - Exercises - Page 17: 114
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.
