Radical symbol

Common card · No. 241542

In mathematics, the radical symbol, radical sign, root symbol, or surd is a symbol for the square root or higher-order root of a number. The square root of a number x {\displaystyle x} is written as x , {\displaystyle {\sqrt {x}},} while the n {\displaystyle n} th root of x {\displaystyle x} is written as x n . {\displaystyle {\sqrt[{n}]{x}}.} It is also used for other meanings in more advanced mathematics, such as the radical of an ideal. In linguistics, the symbol is used to denote a root word.

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