36(x^(2)-x)+36(y^(2)-(2/3)y)-23=0,
36(x^(2)-2*x*(1/2)+(1/2)^(2)-(1/4)+36(y^(2)-2*y*(1/3)+(1/3)^(2)-(1/9))-23=0,
36(x-(1/2))^(2)-9+36(y-(1/3))^(2)-4-23=0,
36(x-(1/2))^(2)+36(y-(1/3))^(2)=36,
(x-(1/2))^(2)+(y-(1/3))^(2)=1,
(x-(1/2))^(2)+(y-(1/3))^(2)=1^(2) - это окружность с центром в точке
С(1/2; 1/3) и радиусом R=1.