x^3-y^3+3y^2-3y+1=x^3-(y^3-3y^2-3y+1)=x^3-(y-1)^3=(x-y+1)(x^2+xy-x+y^2-2y+1)
8x^(3)+y^(3)+6y^(2)+12y+8=8x^3+(y^3+6y^2+12y+8)=8x^3+(y+2)^3=(2x+y+2)(4x^2-2xy-4x+y^2+4y+4)
x^3-y^3+3y^2-3y+1=x^3-(y^3-3y^2-3y+1)=x^3-(y-1)^3=(x-y+1)(x^2+xy-x+y^2-2y+1)
8x^(3)+y^(3)+6y^(2)+12y+8=8x^3+(y^3+6y^2+12y+8)=8x^3+(y+2)^3=(2x+y+2)(4x^2-2xy-4x+y^2+4y+4)