1.
What is (2
p
2
+ 6
pq
-
q
2
) decreased by (3
p
2
+ 2
pq
+ 3
q
2
)?
A.
-
p
2
- 4
pq
- 4
q
2
B.
p
2
- 4
pq
+ 4
q
2
C.
-
p
2
+ 4
pq
- 4
q
2
D.
-
p
2
- 4
pq
+ 4
q
2
Hint
2.
Find the difference of (7
x
2
+ 12
x
– 5) and (5
x
2
–
x
+ 1).
A.
2
x
2
+ 13
x
– 6
B.
12
x
2
+ 11
x
– 4
C.
2
x
2
+ 11
x
– 4
D.
2
x
2
+ 11
x
– 6
Hint
3.
Find (10
x
– 9) – (2
x
– 11).
A.
8
x
+ 2
B.
8
x
+ 20
C.
8
x
– 2
D.
8
x
– 20
Hint
4.
Find (9
x
2
+ 6
x
+ 3) – (6
x
2
– 4
x
+ 2) then evaluate the difference for
x
= -2.5.
A.
44.75
B.
-5.25
C.
18.75
D.
-1.25
Hint
5.
Find (4
c
– 5
d
+ 10) – (16
c
+ 7
d
+ 6) then evaluate the difference for
c
= -3 and
d
= -8.
A.
136
B.
36
C.
-128
D.
56
Hint