Find the sum of the following series:
(a - b)2 + (a2 + b2) + (a + b)2 + s…. + [(a + b)2 + 6ab]
for the given AP the first term a is (a - b)2 and common difference d is a difference of second term and first term, which is 
To find: the sum of given AP
The formula for sum of AP is given by
Substituting the values in the above formula
n = 5
2