Question

Решите ПЖ систему уравнения

Answer 1

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)