当x=-1,y=1时,求代数式2x^2y-(5xy^2-3x^2y)-x^2的值
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当x=-1,y=1时,求代数式2x^2y-(5xy^2-3x^2y)-x^2的值
当x=-1,y=1时,求代数式2x^2y-(5xy^2-3x^2y)-x^2的值
当x=-1,y=1时,求代数式2x^2y-(5xy^2-3x^2y)-x^2的值
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