va rog ajutatima dau coroana si flw
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Răspuns:
1996+2+4+...+3990=
1996+2×(1+2+3+...+1995)=
1996+2×1995×1996:2=
1996+1995×1996=
1996×1996=1996²
Sper ca te-am ajutat!