In an A.P Sum of n terms = n² +n then value of common difference is
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Answer:
sum of n terms= n2+n
S1=1+1=2
S2= 4+2=6
A2= s2-s1 = 6-2
= 4
d=a2-a1
= 4-2
= 2//
therefore common difference of the given AP I'd 2//
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