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aratati+ca+nr+x=2+ori+(1+2+3+.....+36)+37+e+patrat+perfect

Răspuns :

x=2(1+2+3+....+36)+37
x=2x36x37:2+37
x=36x37+37
x=36x37+37x1
x=37(36+1)
x=37x37
x=37^2