Powers are entered by putting a superscript number after the value.

The inverse of a number can be entered using the inverse symbol ⁻¹ (CtrlI).

Powers can also be calculated using the ^ symbol. This allows the power to be an equation.

If your keyboard does not have a ^ key you can use * twice.

Square roots can be calculated using the symbol (CtrlR).

n-th roots can be calculated by putting a subscript number before the root sign.