6y-x^2=-4 x-y=2 x=2+y 6y-(2+y)^2=-4 6y-(2+y)^2+4=0 6y-(4+4y+y^2)+4=0 6y-4+4y-y^2+4=0 -y^2+10y=0 y^2-10y=0 y(y-10)=0 y=0 y=10 x=2 x=12 (2;0) (12;10)