Question

n is even and middle term is (x2+1/x)nis924x6

Answer 1

=(x2+1x2+2.x.1x)n=(x+1x)2nHere 2n is even integerSo, middle term is 2n2+1=(n+1)th termNow,(n+1)th term in (x+1x)2n=cn2n(x)2n−n(1x)n=cn2n(x)2n.1xn(1x)n=cn2n ANS...Middle term is cn2n .