xy+x+y+1
如何分解呢?↑
因式分解問題:(中學)
2006-10-26 7:30 am
回答 (4)
2006-10-26 7:33 am
✔ 最佳答案
xy+x+y+1= x(y+1)+(y+1)
=(y+1)(x+1)
2006-10-25 23:35:10 補充：
你只要搵倒佢地既Common factor，咁就將佢地Group埋一齊就好似上面咁，你見倒兩邊都有y 1呢個factor，咁就可以Group埋一齊啦 ^^唔明再sd個e-mail問我啦 =]
2006-10-25 23:36:03 補充：
修正：你見倒兩邊都有y 1呢個factor
2006-10-25 23:36:54 補充：
再修正[唔知點解y同1之間出唔倒個加..]：你見倒兩邊都有y加1呢個factor
2006-10-26 7:36 am
xy+x+y+1
=x(y+1)+(y+1)
=(y+1)(x+1)
=x(y+1)+(y+1)
=(y+1)(x+1)
2006-10-26 7:33 am
xy+x+y+1
=x(y+1)+(y+1)
=(y+1)(x+1)
=x(y+1)+(y+1)
=(y+1)(x+1)
收錄日期: 2021-04-13 16:19:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061025000051KK05130