Question

How do you key in the power of a number? For example: 4x(to the 2nd power)

Answer 1

Just about everyone here writes a power like this:
4x^2 which means 4x squared.
If you have a Windows computer, you could hold down the "ALT" key and at the same time, type in the number 0178 and you will get this ²
So then you could type 4x² just as it should appear.