15-06-2016
Mathematics

contestada

the equation x2+y2-2x+2y-1=0

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mathmate mathmate

20-06-2016

This is the equation of a circle, centred at (1,-1), radius sqrt(3), as follows
rewrite equation as
(x-1)^2-1+(y+1)^2-1=1, or
(x-1)^2+(y+1)^2=(sqrt(3))^2
Don`t know what else you`d like to do with it. lol

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