因式分解~~
回答 (5)
2007-12-23 10:03 am
5X(4x^2+y+3xy)
2007-12-23 12:02 am
20x^3 -5xy +15x^2 y
20x^3=5．4．x．x．x
-5xy =5．x．y
15x^2y =5．3．x．x．y
=5x(4^2-y+3xy)
20x^3=5．4．x．x．x
-5xy =5．x．y
15x^2y =5．3．x．x．y
=5x(4^2-y+3xy)
2007-12-22 11:56 pm
5X(4x^2+y+3xy)
收錄日期: 2021-04-13 14:46:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071222000051KK02648