The 12th term in the expansion of `e^(-3)` is

The (n+1)th term in the expansion of e^(-3x) is

The (n+1)th term in the expansion of e^(-2) is

The index of a of 12th term in the expansion of (a+2b)^(20) is -

Find the 6th term in the expansion of (x+3)^9 .

The index of a in the 12th term of the expansion of (a+2b)^20 is

Find the 4th term in the expansion of (x-2y)^12 .

Find the 13 th term in the expansion of (9x-(1)/(3sqrt(x)))^(18) Find the middle terms in the expansions:

Determine : the 11th term in the expansion of ((x)/(2)-3y)^(n) .

Find the 4th term in the expansion of (x-2y)^12

Find the 4^th term in the expansion of (x-2y)^12 .