已知(x-1\3)^2+|y+1|=0求4x^2+2x^2y-2(x^2y-2xy+2x^2)-xy的值

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已知(x-1\3)^2+|y+1|=0求4x^2+2x^2y-2(x^2y-2xy+2x^2)-xy的值
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已知(x-1\3)^2+|y+1|=0求4x^2+2x^2y-2(x^2y-2xy+2x^2)-xy的值
已知(x-1\3)^2+|y+1|=0求4x^2+2x^2y-2(x^2y-2xy+2x^2)-xy的值

已知(x-1\3)^2+|y+1|=0求4x^2+2x^2y-2(x^2y-2xy+2x^2)-xy的值