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2) y² +2z + 1 = 0
3) z² +2x + 1 = 0
(1)+(2)+(3)→
(x+1)²+(y+1)²+(z+1)²=0
Wszystkie skladniki sa dodatnie
wiec musza byc rowne zero
(x+1)=0
(y+1)=0
(z+1)=0
ODP
x=-1, y=-1, z=-1
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Hans