Need some help with this. I really have no idea what to do.

Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credit.

x^2 - 4x + y^2 + 8y = -4

Question

Need some help with this. I really have no idea what to do. 

Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credit.

x^2 - 4x + y^2 + 8y = -4

solomonzelman · Answer

$$(x-h)^2+(y-k)^2=r^2$$is the formula


Try to factor you have into a similar form.

anonymous · Answer

I'm not sure how to do that. Gotta love waiting until four days from my last day of senior year to wrap up a class.