1.
Find the product (3
a
+
b
)
2
.
A.
6
a
2
+ 3
ab
+
b
2
B.
9
a
2
+ 6
ab
+
b
2
C.
9
a
2
-
b
2
D.
6
a
2
- 6
ab
+
b
2
Hint
2.
Find the product of
x, x
– 2, and
x
+ 2.
A.
x
3
+ 4
x
B.
x
3
- 4
x
C.
x
3
- 4
D.
x
3
+ 4
x
2
+ 4
x
Hint
3.
Which equation represents the square of a sum?
A.
(
a
+
b
)(
a
–
b
) =
a
2
–
b
2
B.
(
a
+
b
)(
a
–
b
) =
a
2
+
b
2
C.
(
a
–
b
)
2
=
a
2
– 2
a
b
+
b
2
D.
(
a
+
b
)
2
=
a
2
+ 2
a
b
+
b
2
Hint
4.
Which equation represents the product of a sum and a difference?
A.
(
a
+
b
)(
a
–
b
) =
a
2
–
b
2
B.
(
a
–
b
)
2
=
a
2
– 2
a
b
+
b
2
C.
(
a
+
b
)
2
=
a
2
+ 2
a
b
+
b
2
D.
(
a
+
b
)(
a
–
b
) =
a
2
+
b
2
Hint
5.
In genetics dimples are a dominant trait. If a mother and father each have a 50% chance of passing a dominant gene for dimples, what is the chance that their baby would not have dimples?
A.
25%
B.
50%
C.
0%
D.
75%
Hint