Name
Date
LESSON
8-4
Class
Practice B
Factoring ax 2 ⫹ bx ⫹ c
Factor each trinomial.
2
1. 2x ⫹ 13x ⫹ 15
2. 3x 2 ⫹ 10x ⫹ 8
3. 4x 2 ⫹ 24x ⫹ 27
4. 5x 2 ⫹ 21x ⫹ 4
5. 4x 2 ⫹ 11x ⫹ 7
6. 6x 2 ⫺ 23x ⫹ 20
7. 7x ⫺ 59x ⫹ 24
8. 3x ⫺ 14x ⫹ 15
9. 8x ⫺ 73x ⫹ 9
2
2
2
10. 2x 2 ⫹ 11x ⫺ 13
11. 3x 2 ⫹ 2x ⫺ 16
12. 2x 2 ⫹ 17x ⫺ 30
13. 8x 2 ⫹ 29x ⫺ 12
14. 11x 2 ⫹ 25x ⫺ 24
15. 9x 2 ⫺ 3x ⫺ 2
16. 12x 2 ⫺ 7x ⫺ 12
17. 9x 2 ⫺ 49x ⫺ 30
18. 6x 2 ⫹ x ⫺ 40
19. ⫺12x ⫺ 35x ⫺ 18
20. ⫺20x ⫹ 29x ⫺ 6
21. ⫺2x ⫹ 5x ⫹ 42
2
2
2
22. The area of a rectangle is 20x 2 ⫺ 27x ⫺ 8.
The length is 4x ⫹ 1. What is the width?
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
a107c08-4_pr_TX.indd 57
57
Holt Algebra 1
3/30/06 2:58:02 PM
Name
Date
LESSON
8-4
Class
Practice B
Factoring ax 2 ⫹ bx ⫹ c
Factor each trinomial.
2
1. 2x ⫹ 13x ⫹ 15
2x
⫹ 3 x ⫹ 5 4. 5x 2 ⫹ 21x ⫹ 4
5x
⫹ 1 x ⫹ 4 7. 7x ⫺ 59x ⫹ 24
2
7x
⫺ 3 x ⫺ 8 10. 2x 2 ⫹ 11x ⫺ 13
⫹ 13 x ⫺ 1 2x
13. 8x 2 ⫹ 29x ⫺ 12
⫹ 4 8x ⫺ 3 x
16. 12x 2 ⫺ 7x ⫺ 12
4x
⫹ 3 3x ⫺ 4 19. ⫺12x ⫺ 35x ⫺ 18
2
⫺1 4x ⫹ 9 3x ⫹ 2 2. 3x 2 ⫹ 10x ⫹ 8
3x
⫹ 4 x ⫹ 2 5. 4x 2 ⫹ 11x ⫹ 7
4x
⫹ 7 x ⫹ 1 8. 3x ⫺ 14x ⫹ 15
2
3x
⫺ 5 x ⫺ 3 11. 3x 2 ⫹ 2x ⫺ 16
3x
⫹ 8 x ⫺ 2 14. 11x 2 ⫹ 25x ⫺ 24
x
⫹ 3 11x ⫺ 8 17. 9x 2 ⫺ 49x ⫺ 30
9x
⫹ 5 x ⫺ 6 20. ⫺20x ⫹ 29x ⫺ 6
2
⫺1 5x ⫺ 6 4x ⫺ 1 22. The area of a rectangle is 20x 2 ⫺ 27x ⫺ 8.
The length is 4x ⫹ 1. What is the width?
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
a107c08-4_pr_TX.indd 57
57
3. 4x 2 ⫹ 24x ⫹ 27
2x
⫹ 9 2x ⫹ 3 6. 6x 2 ⫺ 23x ⫹ 20
3x
⫺ 4 2x ⫺ 5 9. 8x ⫺ 73x ⫹ 9
2
8x
⫺ 1 x ⫺ 9 12. 2x 2 ⫹ 17x ⫺ 30
x
⫹ 10 2x ⫺ 3 15. 9x 2 ⫺ 3x ⫺ 2
3x
⫹ 1 3x ⫺ 2 18. 6x 2 ⫹ x ⫺ 40
3x
⫹ 8 2x ⫺ 5 21. ⫺2x ⫹ 5x ⫹ 42
2
⫺1 2x ⫹ 7 x ⫺ 6 5x ⫺ 8
Holt Algebra 1
3/30/06 2:58:02 PM