Система x^2+y^2-2xy=36 x+y=-4
X+y=-4 x²+y²-2xy=36 (x-y)²=36 x-y=6 x-y=-6 x+y=-4 x-y=6 2x=2 x₁=1 y₁=-5. x+y=-4 x-y=-6 2x=-10 x₂=-5 y₂=1. Ответ: x₁=1 y₁=-5 x₂=-5 y₂=1.