# Algebra/Square Root is Positive

From Wikibooks, open books for an open world

< Algebra

### Squire Root is Positive[edit]

We often say that is the positive number, which when squared is equal to . If this is perfectly correct, but if then which is not positive. So to be technically correct (which is part of the fun of math) we should say that is the **non-negative** number, which when squared is equal to .

If it is needed to express that a square root may be both positive and negative, you will see .