f.2 maths(1 question only)
回答 (1)
2007-02-01 6:01 am
✔ 最佳答案
(6x-3y/10x^2+xy-3y^2)*(5x^2+8xy+3y^2) =[3(2x-y)/(2x-y)(5x+3y)]*(5x+3y)(x+y)
=3(x+y)
2007-01-31 22:06:28 補充：
2 -15 32*3-1*5=110x^2+xy-3y^2=(2x-y)(5x+3y)5 31 15*1+3*1=85x^2+8xy+3y^2=(5x+3y)(x+y)
收錄日期: 2021-04-25 16:50:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070131000051KK04061