A) n
B) \[n-1\]
C) \[n+2\]
D) \[n+1\]
Correct Answer: D
Solution :
Since, \[{{(1+x+{{x}^{2}}+{{x}^{3}}+...)}^{2}}={{[{{(1-x)}^{-1}}]}^{2}}\] . Coefficient of in = Coefficient of in .You need to login to perform this action.
You will be redirected in
3 sec