The square root of a number is a value that, when multiplied by itself, gives the original number.
- The square root symbol is this:
\sqrt{} - It’s called a radical sign.

Example:
\sqrt{25} = 5; \ \text{because} \ 5 \times 5 = 25
The square root of a number is a value that, when multiplied by itself, gives the original number.

Example:
\sqrt{25} = 5; \ \text{because} \ 5 \times 5 = 25