1.
What is the greatest common factor of 18
mn
2
, 54
m
4
, and 80
n
3
?
A.
2
B.
9
mn
C.
2
mn
2
D.
18
m
2
n
3
Hint
2.
Find the GCF of 3
x
2
y
2
and 15
xy
.
A.
3
x
2
y
B.
3
x
y
2
C.
3
x
2
y
2
D.
3
xy
Hint
3.
Find the GCF of 16
a
3
b
2
and 12
a
2
b
.
A.
2
a
2
b
B.
2
ab
C.
4
a
2
b
D.
4
ab
Hint
4.
Factor 7
x
+ 21.
A.
7(
x
+ 3)
B.
x
(7 + 21)
C.
7(
x
+ 21)
D.
7
x
(1 + 21)
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.
6
x
3
by 4
x
+ 3
B.
24
x
3
by
x
+ 18
C.
2
x
4
by 12 + 9
x
D.
3 by 8
x
3
+ 6
x
3
Hint