Given P(x)=x3−4x2+5x−2P(x) = x^3 - 4x^2 + 5x - 2P(x)=x3−4x2+5x−2, if the roots are \alpha, eta, \gamma, find the value of α2+β2+γ2\alpha^2 + \beta^2 + \gamma^2α2+β2+γ2.
6
8
10
16