# What is the square root of 4?

##### 1 Answer

2 and -2 are square roots of 4. The principal square root of

#### Explanation:

A number is a square root of 4 is, when multiplied by itself, the result is 4.

In notation:

There are two numbers that will work **the** square root of

The principal square root of a (positive) number is the non-negative square root. The symbol

So

Here on Socratic to type

no parentheses: hashtag sqrt9+16 hashtag gets

With parentheses hashtag sqrt(9+16) hashtag gets