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江苏省南京市溧水区九年级数学上学期第二课暑假作业（无答案）（新版）苏科版.docx

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1九年级暑假数学学科第二课姓名_评价_练习 2.31. 填空题:2（3） 设 是方程 的两根， 则 ， = ；12,x23x12x12x2解下列方程：3

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