The sum of first n terms of an AP is `(3n^(2) + 6n)`. The common difference of the AP is

The sum of first n terms of an A.P. is 5n ^(2)+ 4n, its common difference is :

The sum of first n terms of an A.P. is 5n ^(2)+ 4n, its common difference is :

If the sum of n terms of an AP is given by S_(n)=3n+2n^(2) then common difference of the AP is

If the sum of n terms of an A.P. is 3n + 2n^(2) , find the common difference

If S_(n) =nP +1/2 n (n-1) Q, where S_(n) is the sum of first n terms of an A.P. then the common difference of the A.P. will be-

The sum to n terms of an A.P. is n^(2) . Find the common difference.

The sum of n terms of an AP is 3n^(2)+ nand its common difference is 6, then find its first term.

The sum of the n terms of an AP is 2n^(2)+5n and its common difference is 6, then its first term is

The sum of n terms of an A.P is n^2 .Find the common difference.