Answers: 2
![\sqrt[n]{x^m}=x^{\frac{m}{n}](/tpl/images/2431/9829/bc297.png)
The little number outside the radical, called the index, serves as the denominator in the rational power, and the power on the x inside the radical serves as the numerator in the rational power on the x.![\sqrt[3]{x^4}=x^{\frac{4}{3}](/tpl/images/2431/9829/a5e80.png)
![\sqrt[5]{x^7}=x^{\frac{7}{5}](/tpl/images/2431/9829/d17d8.png)
![\sqrt[3]{7}](/tpl/images/2431/9829/e4b81.png)
is the exact same thing as ![\sqrt[3]{7^1}=7^{\frac{1}{3}](/tpl/images/2431/9829/b7c98.png)
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