Find the 13th term in the expansion of 
The general term Tr+1 in the binomial expansion is given by Tr+1 = nCr an-r br
Here a=9x , 
, n =18 and r = 12
Putting values
= 
(9 = (32)6 = 312)
= 18564
7
Find the 13th term in the expansion of
The general term Tr+1 in the binomial expansion is given by Tr+1 = nCr an-r br
Here a=9x , , n =18 and r = 12
Putting values
= (9 = (32)6 = 312)
= 18564