Square Root Operator

The square root operator returns the square root of a number. The square root of a number is a value, that when multiplied by itself is equal to the initial number. For example, the square root of is equal to positive and negative as shown in the equation below.

The square root of is both and because and . The positive root of a number can be visualized as the side length of a square with an area equal to the number. For example, the square with an area of and a side length of as visualized below.

Square Root Geometry

Square Root Notation

The square root operator is written using the radical symbol as shown below and is equivalent to raising the number to the one-half power. Read more…

Basic Examples

Here are the first five number that correspond to the roots through .

Related Operators

The radical operator returns the n-th root of the provided expression. The radical operator is an alternative way of writing a fractional exponent.

The exponentiation operator is a binary operator. The base is an expression or number that is being raised to some exponent. The exponent expression is denoted using superscript text.