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cxycxy
- 04:28
有趣的完全数!x+y+z=xyz,求正整数x,y,z_哔哩哔哩_bilibili
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xzfxcxgv
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yxlmsy2.2
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yjzshzq
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YcZXc
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vyrxxeextc
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浙江省竞赛题:已知:x³+y³=99,x+y=9,求x²+y²
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初中竞赛题:若x+y-z=3,x²+y²+z²=3,求x、y、z? - 西瓜视频
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