which expression is the radical from of x^1.5

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Grade: Education Subject: mathematics
which expression is the radical from of x^1.5
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1) Write exponent as improper fraction
1.5=3/2
2)
[tex]x^{\frac{b}{a}} = \sqrt[a]{x^{b}} \\ \\ x^{\frac{3}{2}} = \sqrt[2]{x^{3}} [/tex]

[tex]or \sqrt{x^{3}} .[/tex]