a-1/a+2÷a²-2a+1/a²-4×a+3/a²+a-6
答案:2 悬赏:50 手机版
解决时间 2021-04-07 19:43
- 提问者网友：听门外雪花风
- 2021-04-07 00:33
a-1/a+2÷a²-2a+1/a²-4×a+3/a²+a-6
最佳答案
- 五星知识达人网友：怀裏藏嬌
- 2021-04-07 00:39
a-1/a+2÷a²-2a+1/a²-4×a+3/a²+a-6
=a-1/a+2÷（a-1）²/(a+2)(a-2)×(a+3)/(a-2)(a+3)=(a-1)/(a+2)×(a+2)(a-2)/(a-1)² ×1/(a-2)
=(a-2)/(a-1) ×1/(a-2)
=1/(a-1)
=a-1/a+2÷（a-1）²/(a+2)(a-2)×(a+3)/(a-2)(a+3)=(a-1)/(a+2)×(a+2)(a-2)/(a-1)² ×1/(a-2)
=(a-2)/(a-1) ×1/(a-2)
=1/(a-1)
全部回答
- 1楼网友：夜风逐马
- 2021-04-07 02:00
=2a^4+8a^7
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