sum of the n terms of an A.P is 2n​2 +3n . Find commom difference of the A.P.

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https://www.meritnation.com/ask-answer/question/q1-if-the-sum-of-n-terms-of-an-a-p-is-2n2-5n-then/arithmetic-progressions/3951260  

Second term is calculated as per the solution. Third term can be calculated using the nth term formula and we can calculate the common difference by subtracting second term from first term.

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