Respuesta :

soooobored
the equation of a circle with a center of (h,k) with a radius of "r" is
[tex](x-h)^2 +(y-k)^2=r^2[/tex]

looking at the given equation,
5x^2 +5y^2=20
divide 5 to both sides to get
x^2+y^2 =4

now compare that to the equatio of a circle shown above

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