x^2 + y^2 - 6x - 6y -7=0
x^2 - 2*3x + 9 -9 + y^2 -2*3y + 9 - 9 - 7 = 0
(x - 3)^2 + (y-3)^2 = 25
a wiec wspolrzedne srodka okregu to S (3,3) a promien to 5 :)
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x^2 + y^2 - 6x - 6y -7=0
x^2 - 2*3x + 9 -9 + y^2 -2*3y + 9 - 9 - 7 = 0
(x - 3)^2 + (y-3)^2 = 25
a wiec wspolrzedne srodka okregu to S (3,3) a promien to 5 :)