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The nth term if an AP is 5n + 2, then the sum of first n terms of the AP will be __________

Posted: Wed Jul 13, 2022 8:06 pm
by answerhappygod
a) \(\frac {n^2 – 8}{2}\)
b) \(\frac {n^2 + 8}{2}\)
c) \(\frac {n^2 – 9}{2}\)
d) \(\frac {n^2 + 9}{2}\)