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Byju's Answer
Standard XII
Mathematics
Multinomial Expansion
The constant ...
Question
The constant term in the expansion of
(
x
2
−
1
x
2
)
16
is
A
16
C
8
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B
16
C
7
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C
16
C
9
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D
16
C
10
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Solution
The correct option is
A
16
C
8
(
r
+
1
)
t
h
term in the expansion will be
16
C
r
(
x
2
)
r
(
−
1
x
2
)
16
−
r
=
16
C
r
(
−
1
)
16
−
r
(
x
)
4
r
−
32
⋯
(
i
)
For constant term,
4
r
−
32
=
0
⇒
r
=
8
Putting
r
=
8
i
n
(
i
)
, we get the constant term as
16
C
8
.
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