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If alpha, beta and gamma are the roots of the equation x^3+4x+1=0, then (alpha+beta)^-1 + (beta+gamma)^-1 + (gamma+alpha)^-1 is

Answer» If alpha, beta and gamma are the roots of the equation x^3+4x+1=0, then (alpha+beta)^-1 + (beta+gamma)^-1 + (gamma+alpha)^-1 is


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