Question

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

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

Answer 1

That entire thing is one equation?

Answer 2

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

Answer 3

What's the exact question?

Answer 4

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

Answer 5

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