x^3-2x^2+3x-1
=(x^3+3x^2+3x+1)-5x^2+2
=(x+1)^3-5x^2-10x-5+10x+7
=(x+1)^2-5(x+1)^2+10x+10-3
=(x+1)^3-5(x+1)^2+10(x+1)-3