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Byju's Answer
Standard XI
Mathematics
Coefficients of Terms Equidistant from Beginning and End
The coefficie...
Question
The coefficient of
x
3
in
(
2
x
−
3
x
2
)
9
is
A
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B
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C
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D
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Solution
The correct option is
D
r=2, coefficient =
9
C
2
(
2
7
)
(
−
3
)
2
=
(
2
)
9
(
3
)
4