Question 1163778
{{{x^2+x+y^2-2y=-1}}}

Complete The Squares:

{{{x^2+x+1/4+y^2-2y+1=-1+1/4+1}}}

{{{(x+1/2)^2+(y-1)^2=1/4}}}

{{{highlight((x+1/2)^2+(y-1)^2=(1/2)^2)}}}--------------Center at (-1/2,1) and radius is  {{{1/2}}}.