# MATH+ check

posted by
**Anonymous**
.

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!?