(x + 2)(x - 4)
x(x - 2)
x2 - 3x - 40 = (x - 8) (x + 5)
2(x - 7)(x - 1)
(x2 + 7x - 18) = (x + 9)(x - 2)
(x2 + 1)(x2 - 2)
(x^2 - 2)(x - 2)(x + 2)
x(x-1)
(x + 2)(x - 4)
(x + 2)(x - 9)
(x - 5)(x + 3)
(x + 1)(x - 8)
x(x - 7)
x(x - 2)
It is not clear what you mean by x^2 minus "factor x". Please add more information and resubmit.
There are no rational factors.
5x^2(4x - 5)(5x + 11)