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Mathematics 15 Online
OpenStudy (anonymous):

What is the standard equation of a circle at the origin? -x^2-y^2=r^2 -x^2+y^2=r^2 -x^2+y^2 -x^2-y^2=r

OpenStudy (amistre64):

its practically the same as the distance a point is from the origin ....

OpenStudy (amistre64):

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