1. 7x2 + 3x - 10 = 7x2 - 7x + 10x - 10
= 7x(x - 1) + 10(x - 1)
= (7x + 10)(x - 1)
2. 11x2 - 9x - 2 = 11x2 - 11x + 2x - 2
= 11x(x - 1) + 2(x - 1)
= (11x + 2)(x - 1)
3. 9x2 + 2x - 11 = 9x2 - 9x + 11x - 11
= 9x(x - 1) + 11(x - 1)
= (9x + 11))(x - 1)
4. x2 - 11x + 10 = x2 - x - 10x + 10
= x(x - 1) - 10(x - 1)
= (x - 10)(x - 1)