Question
Show that the equation represents a circle, and find the center and radius of the circle.$$x^{2}+y^{2}+2 x+y+1=0$$
Step 1
The standard form of a circle equation is $(x-a)^2 + (y-b)^2 = r^2$, where $(a, b)$ is the center of the circle and $r$ is the radius. Show more…
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