Jisho

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べきこん 冪根
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Noun
1. nth root; radical​Mathematics, See also 累乗根
Wikipedia definition
2. Nth root​In mathematics, the nth root of a number x is a number r which, when raised to the power of n, equals x where n is the degree of the root. A root of degree 2 is called a square root and a root of degree 3, a cube root. Roots of higher degree are referred to using ordinal numbers, as in fourth root, twentieth root, etc. For example: 2 is a square root of 4, since 2 = 4. −2 is also a square root of 4, since (−2) = 4. A real number or complex number has n roots of degree n.
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べき根 【べきこん】

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