Question 1052358
{{{x^2-2x+y^2+8y=5}}}

{{{x^2-2x+1+y^2+8y+16=5+1+16}}}

{{{(x-1)^2+(y+4)^2=5+1+16}}}

{{{(x-1)^2+(y+4)^2=22}}}

{{{(x-1)^2+(y+4)^2=(22)}}}


compare it with 
{{{(x-h)^2+(y-k)^2=r^2}}}