Can I use the ti-30xa to find cube root, 4th roots, and 5th roots?

Use the y^x key just above the divide key. For example, to raise 2 to the 4th power, press 2 y^x 4 =

If you mean 6 plus cube root of 2 then press
6 + 2 2nd [cube-root] =

The cube root is the shifted function of the 0 key.

If you mean 6 plus cube root of 2 then press
6 + 2 2nd [cube-root] =

The cube root is the shifted function of the 0 key.

Square root of 39: Press 3 9 [square-root] =
[square-root] is the key just to the left of the divide key.

Cube root of 9482: Press 9 4 8 2 2nd [cube-root] =
[cube-root] is the shifted function of the 0 key.

For other roots, you can use the [nth-root] function, the shifted function of the key above the divide key. For example, to calculate the fourth root of 16, press 1 6 2nd [nth-root] 4 =

On your calculator, in the 4th column and third row down you should see the root x symbol. In order to do a radical, just press a number and then press the root x and you shall get the square root of your number. Now in order to do this for cubed root, fourth root, etc, you have to hit the number you want to put in the radical, the 2nd key, look for the y^x key in the last column second row, and then the number outside the radical. For example, if you wanted to do the cubed root of 8, you would hit 8, 2nd y^x, 3, and you should get 2.

For cube roots, use the cube-root function in the MATH menu. For example, to calculate the cube root of 8, press MATH 4 8 =

For other roots (including cube root), use the xth-root function in the MATH menu. For example, to calculate the fifth root of 32, press 5 MATH 4 3 2 =

xth-root is the shifted function of the x^y key, just above the divide key.

Example: to compute the 5th root of 32, press 3 2 2nd [xth-root] 5 =

You can calculate cube roots by using the cube root function (the 2nd-shift of the 0 key). You can calculate arbitrary roots by using the x-root function (the 2nd-shift of the y^x key, just above the divide key).

The cube root of 49.7 is equal to 49.7 raised to the 1/3 power. You can take the log of 49.7, divide it by 3 and then find the antilog of this result. Or as below:

Cube root 49.7 = Antilog ( log(49.7) / 3) )

Good luck!

Come on now....there are dedicated "square" and "square root" keys on the TI-30XA....

Enter your number e.g. 4, then press the "root x" key to get 2...

Press "x squared" key to get the square of 2 = 4

There's the even more useful "y to the power x" key and it's inverse "xth root of y" key.

E.g. Enter 2, then press the "y to the power x" key, then 5, then =, answer is 32 (2 x 2 x 2 x 2 x 2). Starting with 32, pres 2nd then the "y to the power x" key, then 5, then =, answer is 2, the 5th root of 32....