SOLUTION: whats the standard form, center and radius for x^2+y^2+2x+y+1=0?

Question 975613: whats the standard form, center and radius for x^2+y^2+2x+y+1=0?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
whats the standard form, center and radius for x^2+y^2+2x+y+1=0?
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x^2+2x+y^2+y=-1
complete the square:
(x^2+2x+1)+(y^2+y+1/4)=-1+1+1/4

This is an equation of a circle:
Its standard form: , (h,k)=coordinates of center, r=radius
center: (-1, -1/2)
r^2=1/4
r=1/2
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