x(x+y)(x-y)-x(x+y)^2 用因式分解
回答 (2)
2010-09-04 6:49 am
✔ 最佳答案
x(x+y)(x-y)-x(x+y)^2=x(x+y)[(x-y)-(x+y)]
=x(x+y)(-2y)
=-2xy(x+y)
2010-09-05 1:34 am
收錄日期: 2021-04-22 00:50:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100903000051KK01599