Question

Is it possible to type a square sign, from the computer?

Answer 1

You don't need to. The equation editor has the feature..

\[\sqrt{x^2 + y^2} = r\]

Answer 2

^ is the exponent sign

Answer 3

I just now realized the equation editor, thanks polpak.

Answer 4

example: \[x ^{2}\] = x^2