# What is the square root of 9?

##### 1 Answer
Sep 3, 2015

$3$

#### Explanation:

The square root of $9$ : $\textcolor{red}{\sqrt{9}} = \textcolor{b l u e}{3}$

The square root of any real number is the unique positive number which when squared (multiplied by itself) gives you back that real number.

$3$ is the square root of $9$ because $3 \cdot 3 = 9$