Factorization of the quadratic expression part 1

Resolve into factors 

1. y² + 7y +12                                        

2. y² + 9y + 20

3. y² + 10y +21                                    

4. z² – 7z – 98

5. y² – y –72                                           

6. y² + y – 90

7. p² – 8p +15                                         

8. y² – 13y + 42

9. y² – 20y + 99                                   

10. p² – 28p + 195

11. 2y² + 13y + 15                                      

12. 4y² + 8y + 3

13. 4x² + 12x + 9                                         

14. 6x² + x – 1

15. 6p² + 17p + 10                                       

16. 4y² – 11y – 15

17. 7m² + 16m – 15                                     

18. 8p² + 29p – 12

19. 6y² + 5y – 6                                         

20. 15y² – 13y – 6

21. 14y² – y – 3                                        

22. 9y² – 9y + 2

23. 2y² – 13y + 18                                    

24. 12y² – 7y + 1

25. 16y² – 32y +7