1, 3(x+y)y+6(x+y)x
2, 2x-1-x二次方
麻煩曬..thx
2條因''色''分解
2007-12-28 1:08 am
回答 (2)
2007-12-28 1:15 am
✔ 最佳答案
因式分解1)
3(x+y)y + 6(x+y)x
= 3(x+y) (y + 2x)
2)
2x - 1 - x^2
= -(x^2 - 2x + 1)
= -(x - 1)^2
2007-12-28 2:48 am
1. 3(x+y)y+6(x+y)x
= 3y(x + y) + 6x(x + y)
= (3y + 6x) (x + y)
2. 2x-1-x二次方
= -x^2 + 2x - 1
= - (x^2 - 2x + 1)
= -(x - 1) (x - 1)
= (-x + 1) (x - 1)
= 3y(x + y) + 6x(x + y)
= (3y + 6x) (x + y)
2. 2x-1-x二次方
= -x^2 + 2x - 1
= - (x^2 - 2x + 1)
= -(x - 1) (x - 1)
= (-x + 1) (x - 1)
收錄日期: 2021-04-13 14:48:55
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https://hk.answers.yahoo.com/question/index?qid=20071227000051KK03066