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Ola
x² + y² - 2x - 8y + 9 = 0
x - y + 3 = 0
y = x + 3
y² = x² + 6x + 9
x² + x² + 6x + 9 - 2x - 8x - 24 + 9 = 0
2x² - 4x - 6 = 0
x² - 2x - 3 = 0
delta
d² = 4 + 12 = 16
d = 4
x1 = (2 + 4)/2 = 3 --> y1 = x1 + 3 = 6
x2 = (2 - 4)/2 = -1 --> y2 = x2 + 3 = 2
pronto
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Verified answer
Ola
x² + y² - 2x - 8y + 9 = 0
x - y + 3 = 0
y = x + 3
y² = x² + 6x + 9
x² + x² + 6x + 9 - 2x - 8x - 24 + 9 = 0
2x² - 4x - 6 = 0
x² - 2x - 3 = 0
delta
d² = 4 + 12 = 16
d = 4
x1 = (2 + 4)/2 = 3 --> y1 = x1 + 3 = 6
x2 = (2 - 4)/2 = -1 --> y2 = x2 + 3 = 2
pronto