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Find the sum of n terms of the series wh...

Find the sum of `n` terms of the series whose `n t h` term is: `2n^2-3n+5`

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Verified by Experts

Let Ln be the nth term of the given series
Thus we have
Tn=`2n^2-3n+5`
`sum_(k=1)^nT_k=sum_(k=1)^n(2k^2-3k+5)`
...
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