If `(r+1)` th term is the first negative term in the expansion of
`(1+x)^(7//2)`,, then find the value of r.

Find the general term in the expansion of (x-1/x)^14

If the middle term in the expansion of (x^(2)+1//x)^(n)" is "924x^(6) , then find the value of n.

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

If x^(4) , occurs in the rth term in the expansion of (x^(4)+(1)/(x^(3)))^(15) , then find the value of r.

Find the general term in the expansion of (x^2+1/x)^5 .

If 21^st and 22^nd terms in the expansion of (1+x)^44 are equal then find the value of x.

What is the (r+1)^(th) term in the expansion of (3x+2y)^8 ?

Find the number of terms in the expansion of (x-1/x)^14

If the coefficients of three consecutive terms in the expansion of (1+x)^(n) are in the ratio 1:7:42, then find the value of n.