Respuestas
Respuesta:
Explicación paso a paso:
1) x² + y² + 6x - 8y + 9 = 0
(x² + 6x ) + (y² - 8y) = -9
(x² + 6x + 9) + (y² - 8y + 16) = -9 + 9 + 16
(x + 3)² + (y - 4)² = 16
centro = (-3,4) radio = 4
2)
x² + y² -6x - 4y + 8 = 0
(x² - 6x) + (y² - 4y) = -8
(x² - 6x + 9) + (y² - 4y + 4) = -8 + 9 + 4
(x - 3)² + (y - 2)² = 5
centro = (3,2) radio = √5
3)
x² + y² + x - 7y + 4 = 0
(x² + x) + (y² - 7y) = -4
(x² + x + 1/4) + (y² - 7y + 49/4) = -4 + 1/4 + 49/4
(x + 1/2)² + (y - 7/2)² = 34/4
centro = (-1/2,7/2) radio = √34/2
4)
x² + y² - 2x - 6y + 1 = 0
(x² - 2x) + (y² - 6y) = -1
(x² - 2x + 1) + (y² - 6y + 9) = -1 + 1 + 9
(x - 1)² + (y - 3)² = 9
centro = (1,3) radio = 3
5)
x² + y² + 6x - 14y + 49 = 0
(x² + 6x) + (y² - 14y) = -49
(x² + 6x + 9) + (y² - 14y + 49) = -49 + 9 + 49
(x + 3)² + (y - 7)² = 9
centro = (-3,7) radio = 3