Square root of 642

Sqrt(642). Find the square root of 642 or any other real number, positive or negative. Here are the answers to questions like: Square root of 642 or what is the square root of 642?

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, 25 is the square root of 625 because 25² = 25•25 = 625, -25 is square root of 625 because (-25)² = (-25)•(-25) = 625. 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 642