1.[12-6y+( )]-[-5y^2-( )+( )]=2y^2+3y-42.已知x^2-xy=8,xy-y^2=3.则x^2-y=( ),x^2-y^2=( )a^3+a-4-( )=a^3-a^2+a
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![1.[12-6y+( )]-[-5y^2-( )+( )]=2y^2+3y-42.已知x^2-xy=8,xy-y^2=3.则x^2-y=( ),x^2-y^2=( )a^3+a-4-( )=a^3-a^2+a](/uploads/image/z/1576938-66-8.jpg?t=1.%5B12-6y%2B%28+%29%5D-%5B-5y%5E2-%28+%29%2B%28+%29%5D%3D2y%5E2%2B3y-42.%E5%B7%B2%E7%9F%A5x%5E2-xy%3D8%2Cxy-y%5E2%3D3.%E5%88%99x%5E2-y%3D%EF%BC%88+%EF%BC%89%2Cx%5E2-y%5E2%3D%28+%29a%5E3%2Ba-4-%28+%29%3Da%5E3-a%5E2%2Ba)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 12:30:47