Solution 12305: Calculating nth Roots Using the TI-36X Solar and TI-30Xa Family Scientific Calculators.
How do I perform nth root computations using the TI-36X Solar or TI-30Xa family scientific calculators?The example below will demonstrate how to perform nth root computations on the TI-36X Solar.
Example: Calculate the cube root of 27.
1) Press   [2nd] [yx].
2) Press  [=].
The result is 3.
Please see the scientific calculator family guidebooks for additional information.