Find the center (h,k) and radius r of the circle: 5x^2+10x+5y^2=0

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Given `5x^2+10x+5y^2=0` ; Find the radius and center of the circle:

`5x^2+10x+5y^2=0`

`5(x^2+2x+y^2)=0`

`5(x^2+2x+1-1+y^2)=0` **Complete the square on `x^2+2x`

`5((x+1)^2+y^2)-5=0`

`(x+1)^2+y^2=1`

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Center is at (-1,0) with a...

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