Question

197. и 198 пж срочно ........​

Answer 1

Объяснение:

номер 197

1)

{ y * (y + x) = 4

{ x * (x + y) = - 3

y/x = 4/-3

y= 4/3 x

x² + x * ( - 4/3)x = -3

x = -3

x = 3

y² - 3y = 4

y² + 3y = 4

y = -1

y= 4

y = - 4

y = 1

ответ: (x1, y1) = (-3, 4)

(X2, y2) = (3, -4)

2)

{x * (y + x) = 10

{y * (x + y) = 15

x/y = 2/3

x = 2/3 y

2/3 y * y + y² = 15

y = -3

y = 3

x * (-3) + x² = 10

x * 3 + x² = 10

x = -2

x = 5

x = - 5

x = 2

ответ: (x1, y1) = (-2, -3)

(x2, y2) = (2, 3)