SOLUTION: Sn=n/2(2a +(n-1)d) a=2 and d=2

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Question 755217: Sn=n/2(2a +(n-1)d)
a=2 and d=2
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
what is n?
please repost with a clear and complete question :)