Question

СРОЧНО!!!Решите систему уравнений!
{x+y^2=-2
{y-x=4
С решением

Answer 1

х + y^2 = - 2
x = - y^2 - 2
y - x = 4
y + y^2 + 2 - 4 = 0
y^2 + y - 2 = 0
D = 1 + 8 = 9 ; V D = 3
y1 = ( - 1 + 3 ) : 2 = 1
y2 = ( - 1 - 3 ) : 2 = - 2
y - x = 4
x = y - 4
x1 = 1 - 4 = - 3
x2 = - 2 - 4 = - 6
Ответ ( - 3 ; 1 ) ; ( - 6 ; - 2 )

Answer 2

x=4-y 4-y+y^2=-2 -y+y^2=-2-4 y=-6 -6-x=4 -x=4+6 -x=10