a²+2a+1分之a-1,a²-1.…………通分各位哥哥姐姐叔叔阿姨童鞋们速求解啊
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 10:52:17
![a²+2a+1分之a-1,a²-1.…………通分各位哥哥姐姐叔叔阿姨童鞋们速求解啊](/uploads/image/z/2752792-16-2.jpg?t=a%26%23178%3B%2B2a%2B1%E5%88%86%E4%B9%8Ba-1%2Ca%26%23178%3B-1.%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E9%80%9A%E5%88%86%E5%90%84%E4%BD%8D%E5%93%A5%E5%93%A5%E5%A7%90%E5%A7%90%E5%8F%94%E5%8F%94%E9%98%BF%E5%A7%A8%E7%AB%A5%E9%9E%8B%E4%BB%AC%E9%80%9F%E6%B1%82%E8%A7%A3%E5%95%8A)
a²+2a+1分之a-1,a²-1.…………通分各位哥哥姐姐叔叔阿姨童鞋们速求解啊
a²+2a+1分之a-1,a²-1.…………通分
各位哥哥姐姐叔叔阿姨童鞋们速求解啊
a²+2a+1分之a-1,a²-1.…………通分各位哥哥姐姐叔叔阿姨童鞋们速求解啊
(a-1)/(a²+2a+1)=(a-1)/(a+1)²,
1/(a²-1)=1/[(a+1)(a-1)],
公分母:(a+1)²(a-1),
题目不全,无法通分,但已经有了公分母,通分就简单了.