key on a scientific calculator. Scientific calculators are calculators that contain a variety of functions needed in upper level maths. Scientific calculators contain a key labeled {\displaystyle x^{2}}

. Hitting this key will give you the square of a number. To use it, type in the number being squared, then hit the {\displaystyle x^{2}}

key.

For example, to calculate {\displaystyle 75^{2}}

on a scientific calculator, you would type {\displaystyle 75,x^{2}}