来自申忠轩的问题
若6x^2-xy-15y^2=0,(xy不等于0)则x^2-2xy+4y^2/2x^2-3xy-3y^2=
若6x^2-xy-15y^2=0,(xy不等于0)则x^2-2xy+4y^2/2x^2-3xy-3y^2=
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2020-03-10 14:47
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2020-03-10 14:49:40