xy=-2
x+3=y
y=x+3x*(x+3)=-2
x^2+3x+2=0
D=3^2-4*1*2=9-8=1
x1=(1-3)/2=-2/2=-1x2=(-1-3)/2=-4/2=-2(-1)+3=y
y1=2
(-2)+3=y
y2=1
x₁=- 1, x₂-2y₁=2,у₂=1
(-1;2) и (-2;1)
xy=-2
x+3=y
x+3=y
y=x+3
x*(x+3)=-2
x^2+3x+2=0
D=3^2-4*1*2=9-8=1
x1=(1-3)/2=-2/2=-1
x2=(-1-3)/2=-4/2=-2
(-1)+3=y
y1=2
(-2)+3=y
y2=1
xy=-2
x+3=y
x+3=y
y=x+3
x*(x+3)=-2
x^2+3x+2=0
x₁=- 1, x₂-2
y₁=2,у₂=1
(-1;2) и (-2;1)