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2014-05-25T21:40:14+03:00
A=2012+2 * (1+2011)*2011/2

A=2012+2012*2011

A=2012(1+2011)

A=2012*2012

A=2012²-este pp
2 5 2
2014-05-25T21:48:54+03:00
A=2012+2(1+2+3+....+2011)=2012+2(2012ori1005+1)=2012+2012ori2011=2012ori2012=
=2012 la patrat