1. (x - 2)(x + 8)

2. (x + 6)(x - 12)

3. (x + 9)(x + 4)

4. (x + 6)(x + 2)

5. (x + 6)(x + 9)

6. (x - 4)(x + 5)

7. (x + 3)(x - 3)

8. (x + 10)(x + 10)

9. (x - 3)(x + 12)

10. (x + 4)(x - 3)

11. (x + 5)(x + 2)

12. (x - 3)(x - 4)

13. (x + 8)(x - 8)

14. (x -6)(x+3)

15. (x + 1)(x - 5)