因式分解
1.m(x-y)²-x+y
2.2a³+6a²-36a
(x+2)(x+3)+X²-4
帮忙解道数学题 急
答案:6 悬赏:0 手机版
解决时间 2021-07-31 02:18
- 提问者网友：绫月
- 2021-07-30 08:26
最佳答案
- 五星知识达人网友：持酒劝斜阳
- 2021-07-30 09:46
1. =（x-y)(mx-my-1)
2. =2a(a^2+3a-18)=2a(a+6)(a-3)
3. =(x+2)(x+3)+(x+2)(x-2)=(x+2)(x+3+x-2)=(x+2)(2x+1)
全部回答
- 1楼网友：玩世
- 2021-07-30 14:29
1.(x-y)(mx-my-1)
2.a(x+6)(2x-6)
3.(x+2)(2x+1)
- 2楼网友：长青诗
- 2021-07-30 13:35
解：
1.m(x-y)²-x+y=m(x-y)²-(x-y)=(x-y)(mx-my-1)
2.2a³+6a²-36a=2a(a²+3a-18)=2a(a+6)(a-3)
(x+2)(x+3)+X²-4=(x+2)(x+3)+(x+2)(x-2)=(x+2)(x+3+x-2)=(x+2)(2x+1)
- 3楼网友：动情书生
- 2021-07-30 12:34
1. m(x-y)(x-y)-(x-y)
=(x-y)(mx-my-1)
2. 2a(a²+3a-18）
=2a(a+6)(a-3)
3.x²+5x+6+x²-4=2x²+5x+2=(2x+1)(x+2)
- 4楼网友：笑迎怀羞
- 2021-07-30 10:56
1.m(x-y)²-x+y
=m(x-y)²-(x-y)
=(x-y)(mx-my-1)
2.2a³+6a²-36a
=2a(a²+3a-18)
=2a(a-3)(a+6)
3.(x+2)(x+3)+x²-4
=x²+5x+6+x²-4
=2x²+5x+2
=(2x+1)(x+2)
- 5楼网友：归鹤鸣
- 2021-07-30 10:32
m(x-y)^2-x+y
=m(x-y)^2-(x-y)
=(x-y)(mx-my-1)
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