Q. 83.9( 11 Votes )

Find the sum of the arithmetic progressions (x-y)2, (x2+y2), (x+y)2, … to n terms.

Answer :

for the given AP the first term a is (x - y)2 and common difference d is a difference of the second term and first term, which is

To find: the sum of given AP


Formula: for the sum of AP is given by



Substituting the values in the above formula







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