1.x^2(x-1)-x(x-2)(x-1)
2.【（x-y)^2+(x+y)(x-y)】÷2x
帮我的真的很感谢！做错了也没关系
初中数学的因式分解，谢谢帮忙
答案:6 悬赏:30 手机版
解决时间 2021-04-26 09:39
- 提问者网友：杀生予夺
- 2021-04-26 04:40
最佳答案
- 五星知识达人网友：痴妹与他
- 2021-04-26 05:53
1.x^2(x-1)-x(x-2)(x-1)
=(x-1)[x^2-x(x-2)]
=(x-1)(x^2-x^2+2x)
=2x(x-1)
2.【（x-y)^2+(x+y)(x-y)】÷2x
=[(x-y)(x-y+x+y)]÷2x
=(x-y)*2x÷2x
=x-y
全部回答
- 1楼网友：像个废品
- 2021-04-26 11:04
x2(x-1)-x(x-2)(x-1)
解：=x(x-1)[x-(x-2)]
=2x(x-1)
[(x-y)2+(x+y)(x-y)]÷2x
解：=[(x-y)(x-y+x+y)]÷2x
=2x(x-y) ÷2x
=x-y
- 2楼网友：逐風
- 2021-04-26 10:02
1.x^2(x-1)-x(x-2)(x-1)
=x(x-1)[x-(x-2)]
=2x(x-1)
.
2.[(x-y)^2+(x+y)(x-y)]÷2x
=(x-y)[(x-y)+(x+y)]÷2x
=2x(x-y)÷2x
=x-y
- 3楼网友：千夜
- 2021-04-26 09:30
1（x-1）(x^2-x(x-2))=(x-1)(2x)
2 (x-y)((x-y)+(x+y))/2x=(x-y)(2x)/2x=x-y
- 4楼网友：笑迎怀羞
- 2021-04-26 09:02
第一个 =x^3-x^2-x^3+3x^2-2x=2x(x-1)
第二个=(x^2-2xy+y^2+x^2-y^2)/2x=(2x^2-2xy)/2x=x-2y
- 5楼网友：三千妖杀
- 2021-04-26 07:31
1. x3-x2-x3+3x2-2x=2x2-2x=2x(x-1)
2. (x2-2xy+y2+x2-y2)/2X=(2x2-2xy)/2x=x-y
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯