Square root of 4

Sqrt(4). Find the square root of 4 or any other real number, positive or negative. Here are the answers to questions like: Square root of 4 or what is the square root of 4?

What is square root? Definition of square root

A square root of a number 'x' is a number y such that y² = x, in other words, a number y whose square is y. For example, 5 is the square root of 25 because 5² = 5•5 = 25, -5 is square root of 25 because (-5)² = (-5)•(-5) = 25. When writing math, people often use sqrt(x) to mean the square root of x. Read more about square root here: Square Root - Wikipedia and here: Square Root - Wolfram

Square Symbol?

Here is the square root symbol. It is is denoted by √, known as the radical sign or radix.

Square root of values around 4