LESSON
NAME _________________________________________________________ DATE ___________
6.3
Practice B
For use with pages 338–344
Find the sum or difference.
1. x2 2x 3 x2 5
2. 3x3 2x2 x 1 x2 2x 3
3. 4x2 x 3 2x2 5x 1
4. x2 2x 7 5x2 3
5. 4x3 2x 3x3 3x2 1
6. 2x3 3x2 x 3 x2 2x 4
7. 2x2 5 x 4x2 3x 4
8. 1 3x x2 x3 3 2x5 4x
9. 4x5 3x 4 5x 1 2x5 x2 3
10. 6x3 3x2 5x 1 7x3 3x 6
11. 3x3 2x2 7x 5 3x3 2x2 7x 5
12. 6x2 3x 7 2x2 3x 7
Find the product.
13. x3x 1
14. 2x2x 3)
15. x3x2 x 5
16. x 5x 2
17. (x 3x 1
18. x 4x 1
19. 2x 1x 5
20. 3x 1x 4
21. 2x 3x 1
22. 2x 53x 1
23. 4x 12x 3
24. 5x 43x 1
25. x 1x2 x 1
26. x 3x2 3x 2
27. x 2x2 5x
28. x 9x 9
29. 2x 52x 5
30. x 102
31. 4x 32
32. x 122
33. 3x 82
34. Floor Space
Find a polynomial that represents the total number of
square feet for the floor plan shown below.
12 ft
Lesson 6.3
x ft
x 6 ft
24 ft
35. Advertising
For 1980 through 1990, the amount of money A (in
millions of dollars) spent on television and newspaper advertising
can be modeled by
A 16.2t3 153t2 3609.5t 26,265.9
where t is the number of years since 1980. The amount of money n (in
millions of dollars) spent on newspaper advertising can be modeled by
n 30t2 2257t 14,761.8
where t is the number of years since 1980. Write a model that represents the amount of money v (in millions of dollars) spent on television
advertising.
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Algebra 2
Chapter 6 Resource Book
41