Frac 12x 2 16x 4 July 8, 2019 16 32 64 128 Frac 12 Frac 4x^ 2 +12x x^2-16 x2−164x2+12x Frac 24x^ 6 12x^ -8 4= frac 2 3 (x-12)32(x−12)