1.
Factor 12
a
2
b
+ 30
ab
2
A.
ab
(12
a
+ 30
b
)
B.
6
ab
(2
a
+ 5
b
)
C.
6
ab
(6
a
+ 24
b
)
D.
6(2
a
2
b
+ 5
ab
2
)
Hint
2.
Factor 14
x
2
- 28
y
2
+ 56
A.
14(
x
2
- 14
y
2
+ 42)
B.
14
xy
(
x
- 2
y
+ 4)
C.
(2
x
+ 7
y
+ 2)(7
x
- 4
y
+ 2)
D.
14(
x
2
- 2
y
2
+ 4)
Hint
3.
Factor 20
a
4
b
2
- 15
ab
+ 30
a
2
b
A.
5(4
a
4
b
2
- 3
ab
+ 10
a
2
b
)
B.
a
2
b
(20
a
2
b
- 15 + 30
a
)
C.
5
ab
(4
a
3
b
- 3 + 6
a
)
D.
5
a
2
b
(15
a
2
b
- 10 + 25
a
)
Hint
4.
An expression for the area of a rectangle is
xy
– 2
x
+ 3
y
– 6. Express this area in factored form.
A.
x
(
y
– 2) + 3(
y
– 2)
B.
(
x
+ 3)(
y
– 2)
C.
(
x
– 2)(
y
+ 3)
D.
(
xy
– 2
x
)( 3
y
– 6)
Hint
5.
Solve 5
x
2
– 10
x
= 0.
A.
x
= 0 or
x
= 2
B.
x
= 2
C.
x
= 0
D.
x
= 0 or
x
= -2
Hint