TI-84 calculator root problem

Use the xth-root function in the MATH menu (it should be the fifth item). For example, to calculate the 15th root of 2, press 1 5 MATH 5 2 ENTER .

Press the "2ND" key at the upper-left-hand corner of the keyboard to access the second functions. For example, to calculate the square root of 2, press 2ND [square-root] 2 ENTER.

The power key is marked ^ and is located just above the divide key. For example, to calculate 2 raised to the 7th power, press 2 ^ 7 ENTER

There is no key for the universal root. The operation is available in the MATH MATH menu. For example, to calculate the 7th root of 128, press 7 MATH 5 1 2 8 ENTER

The cube root is the fourth item in the MATH menu. To calculate the cube root of 1728, press
MATH 4 1 7 2 8 ENTER.

Two ways:

2ND [square-root] ( 8 7 . 3 4 / 5 ) ENTER

8 7 . 3 4 / 5 ENTER then 2ND [square-root] 2ND ANS ENTER

The first sequence takes the square root of 87.34/5, the second sequence calculates 87.34/5 then takes the square root of the result.

Use the square-root function, which is the shifted function of the x^2 key, above and left of the 7 key. For example, to find the square root of 2, press 2ND [square-root] 2 ENTER.

I am afraid I do not completely understand what you want. This calculator does not have a Computer Algebra System or CAS. So the results of all calculations will be displayed as decimal numbers, and that includes the square and other roots that are irrational numbers (square root of 2, 3, 5 7, etc.)

You cannot manipulate radicals on this calculator, whether for small numbers or large numbers. Sorry.

The root function is the fifth item on the MATH menu.

For example, to take the 15th root of 32768:
1 5 MATH 5 3 2 7 6 8 ENTER

Type the root number (say 4) then Press the MATH button. Press 5 for the xth root then type in the number you are taking the root of (say 16). Then press ENTER. For the 4th root of 16, you should get 2.

On the calculator enter the root/index first, then hit the MATH key then number 5, then enter your radicand.