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(x - 2)^2 + (y + 1)^2 - 25 = 0
(x - 2)(x1 - 2) + (y + 1)(y1 + 1) - 25 = 0
(x - 2)(5 - 2) + (y + 1)(3 + 1) - 25 = 0
(x - 2)3 + (y + 1)4 - 25 = 0
3x - 6 + 4y + 4 - 25 = 0
3x + 4y - 27 = 0