MATH+ check

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okay the question is as follows:

determine the coefficient of the middle term in the expanxion of
(2x-3)^ 10

n/2 = 10/2 = 5

10C5 (2x)^10-3 (-3)^5 =
252(128X^5)(243)

= 7838208x^5

is this correct? thanks in advance!?

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