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The <math>n</math>th '''root''' of a number <math>x</math>, denoted by <math>\sqrt[n]{x}</math>, is a common operation on numbers and a partial [[inverse]] to [[exponentiation]]. (The proper inverse is the [[logarithm]])

==Definition==
For any (not necessarily real) numbers <math>x,y,n</math>, <math>y=\sqrt[n]{x}</math> if <math>y^n-x</math>. Note that we generally take only the positive value of <math>y</math>, if we wish to take both the positive and negative roots, we write <math>\pm\sqrt[n]{x}</math>.

==See Also==
*[[Algebra]]
*[[Square root]], a special form of a root.

[[Category:Operation]]