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希望杯数学竞赛：如何解方程组a+b+c=√3,a² +b² +c² =1?
希望杯数学竞赛：如何解方程组a+b+c=√3,a² +b² +c² =1?尝试配方法吧
初中数学竞赛题：解方程题型大全138/336
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