已知2x^2+4xy+5y^2-4x+2y+5=0求(3x^2y)^2(-3/8xy^3)/(-4x^4Y^2)的值
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![已知2x^2+4xy+5y^2-4x+2y+5=0求(3x^2y)^2(-3/8xy^3)/(-4x^4Y^2)的值](/uploads/image/z/1639512-0-2.jpg?t=%E5%B7%B2%E7%9F%A52x%5E2%2B4xy%2B5y%5E2-4x%2B2y%2B5%3D0%E6%B1%82%283x%5E2y%29%5E2%28-3%2F8xy%5E3%29%2F%28-4x%5E4Y%5E2%29%E7%9A%84%E5%80%BC)
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已知2x^2+4xy+5y^2-4x+2y+5=0求(3x^2y)^2(-3/8xy^3)/(-4x^4Y^2)的值
已知2x^2+4xy+5y^2-4x+2y+5=0求(3x^2y)^2(-3/8xy^3)/(-4x^4Y^2)的值
已知2x^2+4xy+5y^2-4x+2y+5=0求(3x^2y)^2(-3/8xy^3)/(-4x^4Y^2)的值
2x^2+4xy+5y^2-4x+2y+5=0
x^2+4xy+4y^2+x^2-4x+4+y^2+2y+1=0
(x+2y)^2+(x-2)^2+(y+1)^2=0
x=2 y=-1
代入后面代数式即可