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Byju's Answer
Standard XII
Mathematics
Binomial Theorem
In the expans...
Question
In the expansion of
(
2
x
2
−
8
)
(
x
−
4
)
2
, find the value of c
oefficient of
x
3
.
A
−
16
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B
−
45
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C
−
14
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D
19
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Solution
The correct option is
A
−
16
(
2
x
2
−
8
)
(
x
−
4
)
2
=
(
2
x
2
−
8
)
(
x
2
−
2
x
(
4
)
+
4
2
)
=
(
2
x
2
−
8
)
(
x
2
−
8
x
+
16
)
=
2
x
4
−
16
x
3
+
32
x
2
−
8
x
2
+
64
x
−
128
=
2
x
4
−
16
x
3
+
24
x
2
+
64
x
−
128
Coefficient of
x
3
is
−
16
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0
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