2x-2y=6 |2
xy=-2
x-y=3; y=x-3
x(x-3)=-2
x²-3x+2=0
x₁+x₂=3; 1+2=3
x₁x₂=2; 1·2=2
x₁=1; x₂=2
Получается: 1 и 2.
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2x-2y=6 |2
xy=-2
x-y=3; y=x-3
xy=-2
x(x-3)=-2
x²-3x+2=0
x₁+x₂=3; 1+2=3
x₁x₂=2; 1·2=2
x₁=1; x₂=2
Получается: 1 и 2.