If the coefficient of 2nd, 3rd and 4th terms in the expansion of `(1+x)^(2n)` are in A.P. , show that `2n^2-9n+7=0.`

If the coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)^(2n) are in A.P. then

17.If the coefficients of 2nd,3rd and 4th terms in the expansion of (1+x)^(2n) are in A.P. Show that 2n^(2)-9n+7=0

If the coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)^(2n) are in AP, Show that 2n^(2)-9n+7=0 .

If the coefficient of 2nd,3rd and 4th terms in the expansion of (1+x)^(2n) are in A.P.P.show that 2n^(2)-9n+7=0

If the coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)^(2n) are in A.p., then prove that 2n^2-9n+7=0 .

If the coefficients of second, third and fourth terms in the expansion of (1 + x)^(2n) are in A.P., show that 2n^(2) - 9n + 7=0 .

If the coefficient of second, third and fourth terms in the expansion of (1+x)^(2n) are in A.P. then show that 2n^(2)-9n=-7 .

If the coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)^(n) are in A.P., then the value of n is:

(i) What is the second term in the expansion of (1 + x)^(n) ? (ii) Write the 3^(rd) and 4^(th) terms in the expansion of (1 + x)^(n) . (iii) If the coefficients of 2^(nd) , 3^(rd) and 4^(th) terms in the expansion of (1 + x)^(n) are in A.P, then show that n^(2) - 9n + 14 = 0 .