x³-6x²+11x-6=0
x³-2x²-4x²+8x+3x-6=0
x²(x-2)-4x(x-2)+3(x-2)=0
(x-2)(x²-4x+3)=0
(x-2)(x-1)(x-3)=0
x-2=0,x-1=0,x-3=0
x1=2,x2=1,x3=3