Find the sum to n terms of the series whose nth term is n (n-2).

1.	Find the sum to n terms of the series whose n^th term is n (n-2).
A.	( frac{n(n-1)(2n+4)}{6} )
B.	( frac{n(n+1)(2n-5)}{6} )
C.	( frac{(n-2)(2n-5)}{3} )
D.	( frac{n(n+1)(2n-5)}{3} )
Answer» C. ( frac{(n-2)(2n-5)}{3} )

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