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Verified answer
Jari-jari r adalah jarak pusat (5, -3) ke garis x -12 = 0r = | 5 -12 | / 1^2
= | -7 |
r = 7
L : (x - 5)^2 + (y - -3)^2 = 7^2
L : (x - 5)^2 + (y +3)^2 = 49
L : x^2 -10x +25 + y^2 +6y +9 = 49
L ; x^2 + y^2 -10x + 6y -15 = 0