# Chapter R - Section R.7 - Radical Expressions - R.7 Exercises - Page 66: 7

Not a real number

#### Work Step by Step

$\sqrt[n] a$ can be written as $a^{1/n}$. $\sqrt[3] {-81}=(-81)^{1/4}$ $\sqrt[3] {-81}$ is not a real number

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.