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The radical symbol is used in math to represent taking the square root of an expression. Typically the radical symbol is used in an expression like this:
In plain language, this means “take the square root of the number four”. The radical symbol is also used to represent taking the th root of a number when a number is placed above the start of the symbol as shown below:
In plain language, this means take the th root of the number . For example, the cube root of the number is represented by the following expression.
Returns the square root of the provided expression.
The radical operator returns the nth root of the provided expression. The radical operator is an alternative way of writing a fractional exponent.