Răspunsuri

2014-11-02T18:52:48+02:00
N=2005+2x(2004x2005):2
N=2005+2x (4018020:2)
N=2005+2 x 2009010
N=2005+4018020
N=4020025
2X2=4
3X3=9
4X4=16
5X5=25
Da,numarul 4020025 este patrat perfect