1.
Find the difference
(4 - 7
n
2
) - (-
n
+ 2
n
2
- 1).
A.
-9
n
2
+
n
+ 3
B.
-9
n
2
+
n
+ 5
C.
-5
n
2
-
n
+ 3
D.
-5
n
2
-
n
+ 5
Hint
2.
Simplify (4
x
2
- 3
x
- 2) - (7
x
2
+ 4
x
+ 3).
A.
3
x
2
- 7
x
- 5
B.
-3
x
2
- 7
x
+ 1
C.
-3
x
2
- 7
x
- 5
D.
-3
x
2
+
x
- 5
Hint
3.
Find the difference (10
x
+ 8) – (5
x
+ 4).
A.
5
x
+ 12
B.
15
x
+ 12
C.
15
x
+ 4
D.
5
x
+ 4
Hint
4.
Find the difference (2
x
+ 6) – (7
x
+ 3).
A.
-5
x
+ 3
B.
-5
x
+ 9
C.
5
x
+ 3
D.
9
x
+ 9
Hint
5.
A rectangle has length 10
x
+ 3 and width 6
x
+ 1. What is the difference between the length and the width of the rectangle?
A.
4
x
+ 4
B.
4
x
C.
16
x
+ 4
D.
4
x
+ 2
Hint