实数x、y满足2x^2-2xy+y^2+2x+1=0,求x-y的值.
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![实数x、y满足2x^2-2xy+y^2+2x+1=0,求x-y的值.](/uploads/image/z/1978373-29-3.jpg?t=%E5%AE%9E%E6%95%B0x%E3%80%81y%E6%BB%A1%E8%B6%B32x%5E2-2xy%2By%5E2%2B2x%2B1%3D0%2C%E6%B1%82x-y%E7%9A%84%E5%80%BC.)
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实数x、y满足2x^2-2xy+y^2+2x+1=0,求x-y的值.
实数x、y满足2x^2-2xy+y^2+2x+1=0,求x-y的值.
实数x、y满足2x^2-2xy+y^2+2x+1=0,求x-y的值.
(x-y)^2+(x+1)^2=0
x=y
x=-1
x-y=-1+1=0