3x - 4y = -6 (1)
6x - y² = 3 (2)
(1)* -2 +(2)
-6x + 8y + 6x - y² = 12 + 3
y² - 8y + 15 = 0
D = 64 - 60 = 4
y12 = (8 +- 2)/2 = 5 3
1. y = 3
3x - 12 = -6
3x = 6
x = 2
2. y = 5
3x - 20 = -6
3x = 14
x = 14/3
ответ (2,3) (14/3, 5)
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Verified answer
3x - 4y = -6 (1)
6x - y² = 3 (2)
(1)* -2 +(2)
-6x + 8y + 6x - y² = 12 + 3
y² - 8y + 15 = 0
D = 64 - 60 = 4
y12 = (8 +- 2)/2 = 5 3
1. y = 3
3x - 12 = -6
3x = 6
x = 2
2. y = 5
3x - 20 = -6
3x = 14
x = 14/3
ответ (2,3) (14/3, 5)