1.
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
2.
Find the GCF of 17
r
4
s
4
and 23
r
s
4
.
A.
r
s
4
B.
r
4
s
4
C.
17
r
s
4
D.
rs
Hint
3.
Factor 7
x
+ 21.
A.
7
x
(1 + 21)
B.
7(
x
+ 21)
C.
x
(7 + 21)
D.
7(
x
+ 3)
Hint
4.
Factor 15
x
3
- 5
x
2
.
A.
x
2
(15
x
– 5)
B.
5
x
(3
x
2
- x)
C.
x
(15
x
2
- 5
x
)
D.
5
x
2
(3
x
– 1)
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.
2
x
4
by 12 + 9
x
C.
24
x
3
by
x
+ 18
D.
3 by 8
x
3
+ 6
x
3
Hint