Răspunsuri

2014-10-28T15:44:13+02:00
X+y=2
 x^{2} -2x+y=0

x=2-y
(2-y) ^{2} -2(2-y) +y=0

Se ia separat ecuatia 

4-4y+ y^{2} -4+2y+y=0
 y^{2} -y=0
y(y-1)=0
 y_{1} =0
 y_{2} =1

 x_{1} =2
 x_{2} =1

si S={( x_{1};  y_{1} );( x_{2} ; y_{2} )}