A) 1
B) -1
C) - 48
D) None of these
Correct Answer: D
Solution :
(9 - r) (2) + r (-1) = 0 Þ 18 - 2r - r = 0 Þ \[r=6\] Thus term independent of x is \[^{9}{{C}_{6}}{{(1)}^{3}}{{(-1)}^{6}}=84.\]You need to login to perform this action.
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