Answer :

To prove: that there is no term involving x6 in the expansion of


Formula Used:


General term, Tr+1 of binomial expansionis given by,


Tr+1 nCr xn-r yr where


nCr


Now, finding the general term of the expression, , we get


Tr+1 11Cr


For finding the term which has in it, is given by


22-2r-r=6


3r=16



Since, is not possible as r needs to be a whole number


Thus, there is no term involving x6 in the expansion of.


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