Question
The equation of a circle is $x^{2}-4 x+y^{2}+8 y=16 .$ Find the center and radiusof the circle.
Step 1
We need to convert this equation into the standard form of a circle equation, which is $(x-h)^{2}+(y-k)^{2}=r^{2}$, where $(h,k)$ is the center of the circle and $r$ is the radius. Show more…
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