Question 1115299
CENTER point is wanted?  

x,  {{{(5-3)/2=1}}}
y, {{{(5-1)/2=2}}}


SQUARE of the radius,  {{{(5+3)^2+(5+1)^2=64+36=100}}}


EQUATION of the circle,  {{{highlight((x-1)^2+(x-2)^2=100)}}}