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Bring radical

Real root of the polynomial x^5+x+aPlot of the Bring radical for real argumentIn algebra, the Bring radical or ultraradical of a real number a is the unique real root of the polynomialx5+x+a.{\displaystyle x^{5}+x+a.} The Bring radical defines x{\displaystyle x} as an algebraic function of a{\displaystyle a}.

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