3 index square root 81

Question

I got the answer 3 3index square root 3 is this correct?

Answer 1

isnt the square root of 81 equal to 9.

3*9=?

Answer 2

If this is what you mean,
cube root = cr

(cr(81)) = (cr(27))*(cr(3))
(cr(81)) = 3*(cr(3))
(cr(81)) = 3(cr(3))

This can be written as
81^(1/3) = 3(3^(1/3))
81^(1/3) = (3^(3/3)*(3^(1/3))
81^(1/3) = 3^(4/3)