For the love of all things mathematical, do not attempt to use this bracket without first understanding the basics of square roots.
Formula: √x = y, where y is the square root of x.
Example: √16 = 4, because who needs to explain math, anyway?
Go to Bracket 2: Negate if you're feeling confident about your math skills.
Do not attempt to take the square root of a negative number. The horror, the horror!
Use a calculator. Trust us, you'll need it.
Learn how to Exponentiate before proceeding, or you'll end up lost in a sea of confusion.