Find te rth term of an AP sum of whose first n terms is `2n+3n^(2).`

Find the rth term of an A.P.the sum of whose first n terms is 3n^(2)+4n

Find the rth term of an AP, the sum of whose first n terms is (3n^(2) +2n)

(i) The sum of the first n terms of an AP is ((5n^(2))/(2) + (3n)/(2)) . Find the nth term and the 20th term of this AP. (ii) The sum of the first n terms of an AP is ((3n^(2))/(2) + (5n)/(2)). Find its nth term and the 25th term.

if nth term of an AP is 3n+2 then find the sum n terms.

Find the sum of first 20 terms of an AP whose nth term is 4n-1

Find the general term of AP whose sum of n terms is given by 4n^(2) + 3n .

Find the general term of AP whose sum of n terms is given by 4n^(2)+3n.