If in A.P, `S_n=n^2+2n` then find common difference d

If the sum of n terms of an A.P is S_n=3n^2+5n then find the Common difference:

If the sum of n terms of an A.P. is given by S_(n)=n^(2)+n , then the common difference of the A.P. is

If the sum of n terms of an A.P. is S_n=3n^2+5n . Write its common difference.

The 'n' th term of an A.P. is a_(n)=3+2n then the common difference is ………..

The sum of first n terms of an AP is given by S_n=2n^2 + 3n . Find the common difference of the AP.

The n^( th) term of an A.P. is a_(n)=3+2n , then the common difference is.

If gerneral term of an A.P. is 2n + 5 , then its common difference is

If gerneral term of an A.P. is 2n + 5 , then its common difference is

If S_n=n P+(n(n-1))/2Q ,w h e r eS_n denotes the sum of the first n terms of an A.P., then find the common difference.