Question

How do we express four less than the square of a number?

Answer 1

`x^(2) - 4`

Explanation:

in this case,
`x` is your number. we will always note square with the tiny two at the top of the number.

Four less than anything is easily shown with a minus four.

eg. four less of 12 square:

`12^(2) - 4` = :)