A) -84
B) 84
C) 126
D) -126
Correct Answer: B
Solution :
\[(1+x){{(1-x)}^{10}}{{(1+x+{{x}^{2}})}^{9}}\] \[(1-{{x}^{2}}){{(1-{{x}^{3}})}^{9}}\]\[^{9}{{C}_{6}}=84\]You need to login to perform this action.
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