The nth root of a number is a value such that . is the degree and is the radicand. Finding the nth root is the inverse of exponentiation to the nth power in the sense that . A root can be written with the symbol or with a fractional exponent. . When the radical symbol is written with no given radical, it is a square root (see below). Some examples of roots would be: (since and ) Even degrees result in two answers, one positive and one negative. For example, since and .
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