1. 4(x+5)(x+6)(x+10)(x+12) - 3x²
2. 8a³ - b³ + c³ + 6abc
3. 250x³ + 16y³ - 2z³ + 60xyz
收錄日期: 2021-04-23 23:23:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110911000051KK00539