a²+b²-2b+4a+5=0
a²+4a+4+b²-2b+1=0
(a+2)²+(b-1)²=0
a+2=0 si b-1=0
a=0-2 si b=0+1
a=-2 si b=1
sper ca te-am ajutat
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a²+b²-2b+4a+5=0
a²+4a+4+b²-2b+1=0
(a+2)²+(b-1)²=0
a+2=0 si b-1=0
a=0-2 si b=0+1
a=-2 si b=1
sper ca te-am ajutat