SOLUTION: 2=6
3=12
4=20
5=30
6=42
9=?
Algebra.Com
Question 987891: 2=6
3=12
4=20
5=30
6=42
9=?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
...
\ =\ n^2\ +\ n)
John
My calculator said it, I believe it, that settles it
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