1. (x-y)^2+3(y-x)^3
2. (x-y)^2+2(y-x)
3. (x-y)^2-3(y-z)^3
4. x(2y-x)^2+2x^2(x-2y)
5. 2(x-y)-(y-z)^2
6. x^3+x^2+x+1
7. x^3-x^2-x-1
請列明計算步驟
收錄日期: 2021-04-29 18:16:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090116000051KK00758