Answers: 1
![\sqrt[n]{x}=x^{\frac{1}{n}}](/tpl/images/0266/5792/c4cd4.png)
![\sqrt[3]{x}\cdot \sqrt[3]{x}\cdot \sqrt[3]{x}=(\sqrt[3]{x})^3=x\\\\(x^{\frac{1}{3}})^3=x^{\frac{3}{3}}=x^1=x](/tpl/images/0266/5792/472e6.png)
![\sqrt[3]{x}=x^{\frac{1}{3}} \quad\text{radical index = fraction denominator}](/tpl/images/0266/5792/f4ebd.png)
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