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Calculeaza
Radical din 2012+2+4+6+ ....... + 4022


Răspuns :

2012+2+4+6+ ....... + 4022=
=
2012+2(1+2+3+ ....... + 2011)=
=2012+2 x 2011x(2011+1)/2=
=2012+2011x2012=
=2012(1+2011)=
=2012²=
=4048144