If α,β,γ\alpha, \beta, \gammaα,β,γ are roots of x3−3x2+1=0x^3 - 3x^2 + 1 = 0x3−3x2+1=0, find α3+β3+γ3\alpha^3 + \beta^3 + \gamma^3α3+β3+γ3.
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