1.
Expand (
a
+ 2
b
)
4
.
A.
a
4
+ 8
a
3
b
+ 24
a
2
b
2
+ 4
ab
3
+
b
4
B.
a
4
+ 4
a
3
b
+ 12
a
2
b
2
+ 8
ab
3
+
b
4
C.
a
4
+ 8
a
3
b
+ 24
a
2
b
2
+ 8
ab
3
+
b
4
D.
a
4
+ 8
a
3
b
+ 24
a
2
b
2
+ 32
ab
3
+ 16
b
4
Hint
2.
What is the seventh term of (
x - y
)
8
?
A.
8
xy
7
B.
-35
xy
7
C.
-28
xy
7
D.
-8
xy
7
Hint
3.
Find the expansion of
.
A.
B.
C.
16
a
+
a
3
+ 6
a
2
+ 16
a
+ 16
D.
a
4
+ 8
a
3
+ 16
a
2
+ 8
a
+ 2
Hint
4.
What is the sixth term in the expansion of (
t
+ 3
u
)
7
?
A.
5103
t
5
u
2
B.
5103
t
2
u
5
C.
63
t
5
u
2
D.
63
t
2
u
5
Hint
5.
Which of the following is an example of an expression whose seventh term in its binomial expansion is 1716
x
7
y
6
?
A.
(
x
+
y
)
13
B.
(2
x
+
y
)
11
C.
(
x
+
y
)
14
D.
(
x
+ 3
y
)
12
Hint