1.若x^2+xy-2y^2=0,则(x^2+3xy-2y^2)/(x^2-2y^2)=?2.将单价为a元/千克和单价为b元/千克的两种糖果混在一起,以(a+b)/2元/千克的单价出售.方案一:将总售价相同的两种混合;方案二:将总质量相同的两种
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![1.若x^2+xy-2y^2=0,则(x^2+3xy-2y^2)/(x^2-2y^2)=?2.将单价为a元/千克和单价为b元/千克的两种糖果混在一起,以(a+b)/2元/千克的单价出售.方案一:将总售价相同的两种混合;方案二:将总质量相同的两种](/uploads/image/z/1860911-71-1.jpg?t=1.%E8%8B%A5x%5E2%2Bxy-2y%5E2%3D0%2C%E5%88%99%28x%5E2%2B3xy-2y%5E2%29%2F%28x%5E2-2y%5E2%29%3D%3F2.%E5%B0%86%E5%8D%95%E4%BB%B7%E4%B8%BAa%E5%85%83%2F%E5%8D%83%E5%85%8B%E5%92%8C%E5%8D%95%E4%BB%B7%E4%B8%BAb%E5%85%83%2F%E5%8D%83%E5%85%8B%E7%9A%84%E4%B8%A4%E7%A7%8D%E7%B3%96%E6%9E%9C%E6%B7%B7%E5%9C%A8%E4%B8%80%E8%B5%B7%2C%E4%BB%A5%EF%BC%88a%2Bb%29%2F2%E5%85%83%2F%E5%8D%83%E5%85%8B%E7%9A%84%E5%8D%95%E4%BB%B7%E5%87%BA%E5%94%AE.%E6%96%B9%E6%A1%88%E4%B8%80%EF%BC%9A%E5%B0%86%E6%80%BB%E5%94%AE%E4%BB%B7%E7%9B%B8%E5%90%8C%E7%9A%84%E4%B8%A4%E7%A7%8D%E6%B7%B7%E5%90%88%EF%BC%9B%E6%96%B9%E6%A1%88%E4%BA%8C%EF%BC%9A%E5%B0%86%E6%80%BB%E8%B4%A8%E9%87%8F%E7%9B%B8%E5%90%8C%E7%9A%84%E4%B8%A4%E7%A7%8D)
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