已知:
x²+y²-6x+2y+10=0
求:
(3x²-2xy- y²)/(5x²-7xy+2y²)=?
收錄日期: 2021-04-13 14:49:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071225000051KK04060