The √ symbol has the meaning Square root. It belongs to the category Mathematical Symbols. The Square root symbol is in a sense the opposite of the ² Superscripted two symbol.
Here is an example: √4 = 2 and 2² = 4
In addition, there is a root function, which is the inverse function of the quadratic function. In addition, it is difficult to determine the square root of some real numbers. For example, if you want to determine the square root from the real number 2, you can only give an approximate value.