Question

help plz !!!

Answer 1

\[2 x^2-12 x-2 y^2-4y-86=0\]
\[x^2-6x+y^2-2y-43=0\]
\[x^2-2*x*3+3^2+y^2-2*y*1+1^2=43+3^2+1^2=43+9+1=53\]
\[\left( x-3 \right)^2+\left( y-1 \right)^2=\left( \sqrt{53} \right)^2\]