(x - 1) . (2x - 3)=
(2x -1) . (2x^2 - 3x + 2)=
(x^2 - 2x - 3) . (2x^3 - 5x^2 - 4x + 3)=
(x + 1) . (x^2 + x + 1)=
(3x - 2) . (x -5)=
(2x + 3) . (3x - 4)=
(3x + 2) . (x^3 - 2x^2 + 5x + 1)=
3x^2 - 17x + 10
3x^4 - 4x^3 + 11x^2 + 13x + 2
6x^2 + x - 12
2x^5 - 9x^4 + 26x^2 + 6x - 9
2x^2 - 5x + 3
4x^3 - 8x^2 + 7x - 2
x^3 + 2x^2 + 2x + 1
