The sum of the first terms of an arithmetic series is expressed as
The 10th term of the series is ....
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The sum of the first n terms of an arithmetic series is expressed as Sn=2n2+4n
The 10th term of the series is ....
Given an arithmetic series with Sn=2n2+4n
If Un=Sn−Sn−1, then
The 10th term of the series is
Therefore, the 10th term of the series is 42