Et lite stykke
Posted: 11/10-2005 23:47
Hvordan kan (n(n+1)(2n+1))/6 + n(n+1) bli (n(n+1)(2n+7))/6 !?


Tor wrote:Hvordan kan (n(n+1)(2n+1))/6 + n(n+1) bli (n(n+1)(2n+7))/6 !?
Code: Select all
(n(n+1)(2n+1)+6n(n+1)
--------------------
6