1.
The area of a square is 4
x
2
+ 12
x
+ 9. Find the perimeter.
A.
4
x
– 6
B.
8
x
+ 3
C.
4
x
+ 6
D.
8
x
+ 12
Hint
2.
Which of these represents factoring differences of squares?
A.
a
2
– 2
a
b
+
b
2
= (
a
–
b
)(
a
–
b
)
B.
a
2
+
b
2
= (
a
–
b
)(
a
+
b
)
C.
a
2
–
b
2
= (
a
–
b
)(
a
+
b
)
D.
a
2
+ 2
a
b
+
b
2
= (
a
+
b
)(
a
+
b
)
Hint
3.
Factor the trinomial 4
x
2
+ 12
x
+ 9.
A.
(2
x
– 3)
2
B.
(2
x
+ 3)
2
C.
(2
x
+ 3)(2
x
– 3)
D.
(2
x
+ 3)(3
x
+ 2)
Hint
4.
The area of a square is
x
2
– 16
x
+ 64 square units. Find the perimeter.
A.
(
x
– 8) units
B.
(
x
+ 8) units
C.
(4
x
– 32) units
D.
(4
x
+ 32) units
Hint
5.
Factor the binomial 16
y
2
– 9.
A.
(4
y
– 3)
2
B.
(4
y
– 3)(4
y
+ 3)
C.
(16
y
– 9)(16
y
+ 9)
D.
(4
y
– 3)
2
Hint