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Verified answer
Persamaan Lingkaran2x² + 2x + 2y² - 2y + 3 = 0
Kedua ruas kalikan (1/2)
x² + x + y² - y = -3/2
(x + 1/2)² + (y - 1/2)² = -3/2 + (1/2)² + (-1/2)²
(x + 1/2)² + (y - 1/2)² = -1
Pusat = (-1/2 , 1/2)
tp apakah r² = -1 ???
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