化简：[(2X+1)^2-(3x-2)^2]\(1-5x)
答案:3 悬赏:60 手机版
解决时间 2021-01-24 13:09
- 提问者网友：欲劫无渡
- 2021-01-23 22:54
化简：[(2X+1)^2-(3x-2)^2]\(1-5x)
最佳答案
- 五星知识达人网友：渊鱼
- 2021-01-24 00:06
解：原式=(4x^2+4x+1-9x^2+12x-4)/(1-5x)
=(-5x^2+16x-3)/(1-5x)
=(5x^2-16x+3)/(5x-1)
=(5x-1)(x-3)/(5x-1)
=x-3
=(-5x^2+16x-3)/(1-5x)
=(5x^2-16x+3)/(5x-1)
=(5x-1)(x-3)/(5x-1)
=x-3
全部回答
- 1楼网友：上分大魔王
- 2021-01-24 01:19
解：原式=(4x^2+4x+1-9x^2+12x-4)/(1-5x)
=(-5x^2+16x-3)/(1-5x)
=(5x^2-16x+3)/(5x-1)
=(5x-1)(x-3)/(5x-1)
=x-3
=(-5x^2+16x-3)/(1-5x)
=(5x^2-16x+3)/(5x-1)
=(5x-1)(x-3)/(5x-1)
=x-3
- 2楼网友：玩家
- 2021-01-24 00:22
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