# Math Help - The center of circle

1. ## The center of circle

The equation of a circle is x^2+6x+y^2-2y=12 ,what is the center ?

2. ## Re: The center of circle

You need to complete the square. I'll do the x bit $x^2+6x=(x+3)^2-9$

3. ## Re: The center of circle

I forgot how to complete the square ,i will search that .

4. ## Re: The center of circle

Aha so the answer should be (-3,1).

You got it.