Let α,β,γ\alpha, \beta, \gammaα,β,γ be the roots of x3−2x2+3x−4=0x^3 - 2x^2 + 3x - 4 = 0x3−2x2+3x−4=0. Find the value of 1α2+1β2+1γ2\frac{1}{\alpha^2} + \frac{1}{\beta^2} + \frac{1}{\gamma^2}α21+β21+γ21.
116\frac{1}{16}161
−516-\frac{5}{16}−165
516\frac{5}{16}165
−116-\frac{1}{16}−161