1.
Find –8
x
3
y
2
(3
xy
4
– 2
x
5
–
y
).
A.
–24
x
4
y
6
+ 16
x
15
y
2
+ 8
x
3
y
3
B.
–24
x
4
y
6
+ 16
x
8
y
2
+ 8
x
3
y
3
C.
–5
x
4
y
6
- 10
x
8
y
2
- 9
x
3
y
3
D.
–24
x
4
y
6
- 16
x
8
y
2
+ 8
x
3
y
3
Hint
2.
Solve 4
a
(
a
– 4) – 7
a
=
a
(4
a
– 3) + 20.
A.
a
= -1
B.
a
= -6
C.
D.
a
= -2
Hint
3.
Multiply 4
x
2
(–
x
2
– 3
x
+ 2).
A.
–4
x
2
– 7
x
+ 8
B.
–4
x
2
– 12
x
+ 8
C.
–4
x
4
– 7
x
3
+ 8
x
2
D.
–4
x
4
– 12
x
3
+ 8
x
2
Hint
4.
Simplify 5(2
k
2
– 3
k
) – 6
k
(–
k
2
+
k
– 7).
A.
–6
k
3
+ 4
k
2
+ 27
k
B.
6
k
3
+ 4
k
2
+ 27
k
C.
6
k
3
+ 4
k
2
– 5
k
D.
–6
k
3
+ 4
k
2
– 5
k
Hint
5.
Solve
x
(
x
– 2) + 2
x
(
x
+ 3) + 10 = 3
x
(
x
– 1) + 31.
A.
x
= –2
B.
x
= 3
C.
x
= 2
D.
x
= 4
Hint