Why is the simplified version of cubed root of 9 3^(2/3)??? How do u get that from cube root of 9??

9 = 3^2  

 

 Cube root means raising to the power 1/3

 

So 9^(1/3) → (3^2)^(1/3)   

 

Now in general  (x^m)^n  = x^(m*n)  so (3^2)^(1/3) = 3^(2*1/3)  or 3^(2/3)

 

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