x^2 + y^2 - 10·x + 6·y + 9 = 0
C [5, -3]
r = √(5^2 + (-3)^2 - 9)---> r = 5
{x^2 + y^2 - 10·x + 6·y + 9 = 0
{x = 2
[x = 2 ∧ y = 1, x = 2 ∧ y = -7]
A [2, 1]
Β [2, -7]
In figura quanto ulteriore richiesto:
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