(x+8)(x+1)
x^2+x+8x+8
x^2+9x+8
(x+3)(x-6)
x^2-6x+3x-18
x^2-6x-18
(x-10)(x+11)
x^2+11x-10x-110
x^2+x-110
(x-7)(x+8)
x^2+8x-7x-56
x^2+x-56
