1) (x - 1)(x - 2) = x^2 - 3x + 22) (x + 3)(x - 3) = x^2 - 93) (x + 10)(x - 4) = x^2 + 6x - 404) (2x - 1)(3x - 1) = 6x^2 - 5x + 1
1) (x - 1)(x - 2) = x^2 - 3x + 2
2) (x + 3)(x - 3) = x^2 - 9
3) (x + 10)(x - 4) = x^2 + 6x - 40
4) (2x - 1)(3x - 1) = 6x^2 - 5x + 1