first term of AP if its Sn = n^2 +2n is .......
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Answers
Answered by
0
Answer:
Putting n = 1
We get the first term,
a1 = 1^2+2*1 = 1+2 =3
Answered by
1
Answer:
at n=1sn =3
at n=2sn=8
so first term is 3 .
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