A) \[-4\]
B) \[-8\]
C) \[6\]
D) \[10\]
Correct Answer: A
Solution :
[a] Put \[1+x=y,\] we get \[1+{{(y-1)}^{4}}+{{(y-1)}^{5}}=\sum\limits_{i=0}^{5}{{{a}_{i}}{{y}^{i}}}\] Equating coefficients of \[{{y}^{2}}\] on both sides, we get \[{{a}_{2}}{{=}^{4}}{{c}_{2}}{{-}^{5}}{{c}_{3}}=6-10=-4\]You need to login to perform this action.
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