Published by:
CGP EDU Academic Team
Published on: August 14, 2026
In the expansion of 
find the sum of middle terms
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Sol. Here n = 9 (odd) so two middle term are the
& 
T 5 = 9 C 4 (2a) 5 . 
, T 6 = 9 C 5 (2a) 4 
Sum of middle terms
= 9 C 4 . 2 5 . 
a 13 – 9 C 5 2 4 
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