x^2 +y^2+4x-2y-20

I have to graph this circle, but how do i find the midpoint?

Question

x^2 +y^2+4x-2y-20

I have to graph this circle, but how do i find the midpoint?

anonymous · Answer

That entire thing is one equation?

anonymous · Answer

The only way it can be a circle equation is if it's in the form of Ax^2 + By^2 = C

anonymous · Answer

What's the exact question?

mathstudent55 · Answer

At least it must be an equation with an equal sign and something on the right side of the equal sign.

irishboy123 · Answer

do you know how to complete the square?

if so, here do it twice: from $x^2 +y^2+4x-2y-20$, do it for the $x^2 +4x$ and $y^2-2y$ parts and keep a close eye on the remaining numbers

you can the do the graph in one go using a compass