最近Maths堂教左併項法,究竟係咩黎同點做架?
1) -2x+xy+2z-zy=?
2) -2x-xy+2z+zy=?
收錄日期: 2021-04-23 20:27:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070211000051KK02317