Check Point Answers 303
3.
4.
5.
6.
7.
8.
9.
10.
11.
5
5
a
a
y
y
6
14
84
5
5
x
x
14 3
5 17
15 -
97 43
936
4
x
x
x 5
5
52
y
y
y
11
511
11
6
66
634
4 x 28
7
4 x
x
t
t
t
3
5
12
360
63
7 5 119
7 35 119
784
12
x
x
x
x
11 18 3x 14
818-4
8-32
-4
x
x
x
x 5
5
5
5
1
1 2
- 5xy + 6xy = 11xy
- 120xy^2 – 80xy^2 = 40xy^2
- 15z + 25x is not possible.
- 6x(2x + 9) = 12x^2 + 54x
- 12 + 5(x + 1) = 12 + 5x + 5 = 5x + 17
- 6t^2 (t – 3) – 2t^2 = 6t^3 – 18t^2 – 2t^2 = 6t^3 – 20t^2
- 5y(6y + 2) + 7y^2 (4 – 12y) =
30 y^2 + 10y + 28y^2 – 84y^3 =
-84y^3 + 58y^2 + 10y
- 8a(2b – 5) – 2b(a – 2) =
16 ab – 40a – 2ab + 4b =
14 ab – 40a + 4b
- -3a^3 + 5a^2 – 3a + 12 is degree 3.
- 6 + 3b – 4b^2 is degree 2.
- 2t – 9 + 7t^2 +4t^3 is degree 3.
- 11y – 7y^4 + 5y^2 – 3 is degree 4.
- 6 – 4x^2 + 3x is degree 2.
- a^3 + 10a^4 – 11a + 9 = 10a^4 + a^3 – 11a + 9
- 2b^3 – 9b + 12b^2 – 5 = 2b^3 + 12b^2 – 9b – 5
- 3k^4 + 8k^5 – 13k – 7 = 8k^5 + 3k^4 – 13k – 7
- 4 – 7m^2 + 14m^4 + 2m^3 =
14 m^4 + 2m^3 – 7m^2 + 4
- 5p – 3 + 6p^2 – 15p^3 = – 15p^3 + 6p^2 + 5p – 3
Chapter 10
1.
2.
x
x
17 53
36
t
t
11 46
57
