1.
What is the greatest common factor of 18
mn
2
, 54
m
4
, and 80
n
3
?
A.
2
B.
2
mn
2
C.
18
m
2
n
3
D.
9
mn
Hint
2.
Find the GCF of 16
a
3
b
2
and 12
a
2
b
.
A.
2
a
2
b
B.
2
ab
C.
4
ab
D.
4
a
2
b
Hint
3.
Factor 7
x
+ 21.
A.
7(
x
+ 3)
B.
7(
x
+ 21)
C.
x
(7 + 21)
D.
7
x
(1 + 21)
Hint
4.
Factor 15
x
3
- 5
x
2
.
A.
x
(15
x
2
- 5
x
)
B.
5
x
(3
x
2
- x)
C.
5
x
2
(3
x
– 1)
D.
x
2
(15
x
– 5)
Hint
5.
The area of a rectangle can be written by the expression 24
x
4
+ 18
x
3
. Find a set of possible dimensions for this rectangle.
A.
2
x
4
by 12 + 9
x
B.
24
x
3
by
x
+ 18
C.
6
x
3
by 4
x
+ 3
D.
3 by 8
x
3
+ 6
x
3
Hint