Directions: Factor the following trinomials.

1. a^2 – 3a + 2

2. b^2 + 4b + 3

3. c^2 +6c + 5

4. x^2 +8x + 7

5. y^2 +10y + 9

6. r^2 +12r +11

7. m^2 + 5m +4

8. a^2 -8a + 7

9. x^2 -12x +11

10. x^2 + 11x +10

11. t^2 -18t + 72

12. r^2 -16r + 60

13. z^2 -20z + 100

14. y^2 + 4y -5

15. b^2 -2b -8

16. x^2 – 3x – 40

17. 2x^2 – 5x +2

18. 3x^2 + 10x + 3

19. 2x^2 + 11x + 5

20. 2x^2 + 7x + 6