Math: x^2 + bx + c please help.

Pleaseeeee help, I don't understand it. It says factor each trinomial. ^means: to the power of.

1. X^2 + 10x + 24.
2. Y^2 + 12y + 20.
3. A^2 + 15a + 54.
4. H^2 + 18h + 45.
5. X^2 + 16x + 48.
6. C^2 + 15c + 50.
7. X^2 - 16x + 48.
8. D^2 - 19d + 88.
9. X^2 - 20x + 36.
10. M^2 - 43m + 42.
11. X^2 - 16x + 28.
12. N^2 - 12n + 35.
13. F^2 + 3f - 28.
14. B^2 + 11b - 42.
15. X^2 + 12x - 160.
16. G^2 + 2g - 48.
17. K^2 + 16k - 36.
18. X^2 + 2x - 63.
19. P^2 - 2p - 8.
20. X^2 - x - 72.
21. Q^2 - 3q - 18.
22. X^2 - 4x- 32.
23. T^2 - 19t - 39.
24. W^2 - 20w - 125.

Please please help im so confused.

When factoring trinomials, all you do is find factors of the LAST term that ADDS up to the MIDDLE term and put them in parentheses along with your squared (^2) variable.

1. X^2 + 10x + 24
(x + 4)(x + 6)

2. Y^2 + 12y + 20
(y + 10)(y + 2)

3. A^2 + 15a + 54
(a + 6)(a + 9)

4. H^2 + 18h + 45
(h + 15)(h + 3)

5. X^2 + 16x + 48
(x + 12)(x + 4)

6. C^2 + 15c + 50
(c + 10)(c + 5)

7. X^2 - 16x + 48
(x - 12)(x - 4)

8. D^2 - 19d + 88
(d - 8)(d - 11)

9. X^2 - 20x + 36
(x - 18)(x - 2)

10. M^2 - 43m + 42
(m - 1)(m - 42)

11. X^2 - 16x + 28
(x - 14)(x - 2)

12. N^2 - 12n + 35
(n - 7)(n - 5)

13. F^2 + 3f - 28
(f - 4)(x + 7)

14. B^2 + 11b - 42
(b + 14)(b - 3)

15. X^2 + 12x - 160
(x + 20)(x - 8)

16. G^2 + 2g - 48
(g + 8)(g - 6)

17. K^2 + 16k - 36
(k + 18)(k - 2)

18. X^2 + 2x - 63
(x + 9)(x - 7)

19. P^2 - 2p - 8
(p + 2)(p - 4)

20. X^2 - x - 72
(x + 8)(x - 9)

21. Q^2 - 3q - 18
(q + 3)(q - 6)

22. X^2 - 4x- 32
(x + 4)(x - 8)

23. T^2 - 19t - 39
NOT FACTORABLE

24. W^2 - 20w - 125
(w + 5)(w - 25)

1. x^2 + 10x + 24