(a-2分之1+a的平方+a-2分之a的平方-1)除以(a+2分之a)的平方,答案为(a-2)(a的平方+a-2)分之(a-1)(a+2)的
平方.若不对请写出解题思路.
人气:312 ℃ 时间:2020-04-20 04:00:40
解答
=[1/(a-2)+(a+1)(a-1)/(a-2)(a+1)]÷a²/(a+2)²
=[1/(a-2)+(a-1)/(a-2)]×(a+2)²/a²
=a/(a-2)×(a+2)²/a²
=(a+2)²/a(a-2)
推荐
猜你喜欢
- 乳酸与碳酸氢钠反应后在人体的代谢如何
- 竖直放置薄膜干涉条纹间距是否等间距
- 老婆英文怎么写
- 设x属于[0,2],则函数y=4的x次方-3 乘2的x次方+2的最大值和最小值
- done,I,eight,when,miles,overtook,you,have,hour,an,you连词成句
- FRIEND WANTED:Are you a 16 years old girl?Do you do well in every subject?Then we can discuss problems together.
- 求lim x-0 sinx-x/x^2sinx的极限
- 左右结构的字,左边是一个木字,右边是一个节字,问,是什么字?