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初中数学：已知a+b=4，ab=2，怎么求a³+b³的值？立方和公式考题
初中数学：已知a+b=4，ab=2，怎么求a³+b³的值？立方和公式考题
初中数学，完全平方公式，基础训练，培优专题90/139
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