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Mathematics
Mathematics
Problem
Find the coefficient of
x
−
2
x^{-2}
x
−
2
in the expansion of
(
4
x
3
−
5
x
2
)
11
\left(4x^{3} - \dfrac{5}{x^{2}}\right)^{11}
(
4
x
3
−
x
2
5
)
11
.
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