[tex](x-2)^2+(y-1)^2=x^2+y^2-3\\x^2-4x+4+y^2-2y+1-x^2-y^2=-3\\-4x+4-2y+1=-3\\-4x-2y=-3-4-1\\-4x-2y=-8\\-(4x+2y)=-8 /*(-1)\\4x+2y=8\\2(2x+y)=8 /:2\\2x+y=4\\\\(-3-x)^2-3x=(x-y)(x+1)+xy+13\\9+6x+x^2-3x=x^2+x-xy-y+xy+13\\9+3x=x-y+13\\3x-x+y=13-9\\2x+y=4\\\\\\\\\left \{ {{2x+y=4} \atop {2x+y=4}} \right.\\ 0=0\\\\\text{Proste o tych rownaniach nakladaja sie na siebie, wiec maja wszystkie punkty wspolne}\\[/tex]
