x-3分之x-x的平方-3x分之x+6+x分之1
=x/(x-3)-(x+6)/x(x-3)+1/x
=(x²-x-6+x-3)/x(x-3)
=(x²-9)/x(x-3)
=(x+3)(x-3)/x(x-3)
=(x+3)/x
=x分之（x+3)
猜你喜欢
- 1关于"The study of natural history is not something to be left to biologists."
- 2she ias quite a different girl__she was five years ago.
- 3最能表明一个细胞的特殊功能的是细胞膜的结构而不是细胞器的数量和种类
- 4天然金刚石在什么自然条件下形成?
- 530000保留两个有效数字是多少?
- 6——those are schoolbags?——yes（ ）/no（
- 7torque converter是什么意思
- 8翻译 You can get there by either riding your bike or taking Bus No.10 or No.8
- 9请给七年级（三）班设计一个班名、班徽班级口号.
- 10Ben—（have）some new crayons用所给词的适当形式填空