(x2 + 1)(x2 - 2)
(2x - 1)(2x + 3)
It is (A-1)(A+1) when factored
(7x + 8)(7x - 9)
(2x - 1)(4x + 1)
(x2 + 1)(x2 - 2)
3x squared minus 25x minus 28
There are no rational factors.
(2x - 1)(2x + 3)
(a + 3)(a - 3)
(5x - 2y)(5x + 2y)
(x - y)(x + y)
Without that other number, all you've got is zero.
2x squared - 5x - 3 = (2x +1)(x -3)
(x + 1)(x - 8)
(3 - i)(3 + i)
It is (A-1)(A+1) when factored