Question 1068045
{{{4(x^2+6x)+4(y^2+18y)=4*19}}}


{{{x^2+6x+y^2+18y=19}}}


*    {{{x^2+6x+9+y^2+18y+81=19+9+81}}}


{{{highlight((x+3)^2+(y+9)^2=109)}}}
Circle with center at  (-3,-9) and radius  {{{sqrt(109)}}}





*  Completing the Squares