Question 211736
{{{4x^2 + y^2 - 4y - 36 =0}}}
{{{4x^2 + y^2 - 4y -36+36= 36}}}  add 36 to both sides of the equation
{{{4x^2+y^2-4y=36}}}
{{{4x^2 +y^2-4y+4=36+4}}}   add 4 to both sides of the equation

{{{4*x^2+(y-2)^2=40}}}

{{{(4x^2)/40+(y-2)^2/40=1}}}   divide both sides by 40
{{{x^2/10+(y-2)^2/40=1}}}