1.m×4×n-4×n×m
2.y×x×7-2×x×x+4×y×y-10×x×y
3.m×2m-4m+m×m ←←← ←← (m二次)
快快快快快快快快快快快快快快
I WANT TO HAVE ANSWER
2012-10-09 2:13 am
回答 (1)
2012-10-09 2:53 am
✔ 最佳答案
(m二次) = m^21. 4mn -4mn
= 0
2. 7yx-2x^2+4y^2-10xy
= -3xy+4y^2-2x^2
3. 2m^2-4m+m^2
=3m^2-4m
收錄日期: 2021-04-13 19:01:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121008000051KK00318