已知xy满足(x+1)^2+y-2=0 求代数式-2xy+(1/2x^2y^2-3y)*2x+6xy
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已知xy满足(x+1)^2+y-2=0求代数式-2xy+(1/2x^2y^2-3y)*2x+6xy已知xy满足(x+1)^2+y-2=0求代数式-2xy+(1/2x^2y^2-3y)*2x+6xy已知
已知xy满足(x+1)^2+y-2=0 求代数式-2xy+(1/2x^2y^2-3y)*2x+6xy
已知xy满足(x+1)^2+y-2=0 求代数式-2xy+(1/2x^2y^2-3y)*2x+6xy
已知xy满足(x+1)^2+y-2=0 求代数式-2xy+(1/2x^2y^2-3y)*2x+6xy
x=-1 y=2 代入求值就可以
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