已知实数x,y满足条件x^2-2xy+2y^2,则|x+y|的最大值为x^2-2xy+2y^2=2
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![已知实数x,y满足条件x^2-2xy+2y^2,则|x+y|的最大值为x^2-2xy+2y^2=2](/uploads/image/z/6926421-21-1.jpg?t=%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0x%2Cy%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6x%5E2-2xy%2B2y%5E2%2C%E5%88%99%7Cx%2By%7C%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E4%B8%BAx%5E2-2xy%2B2y%5E2%3D2)
已知实数x,y满足条件x^2-2xy+2y^2,则|x+y|的最大值为x^2-2xy+2y^2=2
已知实数x,y满足条件x^2-2xy+2y^2,则|x+y|的最大值为
x^2-2xy+2y^2=2
已知实数x,y满足条件x^2-2xy+2y^2,则|x+y|的最大值为x^2-2xy+2y^2=2
缺少条件,x^2-2xy+2y^2=?