作业帮先化简,再求值[a²/a²-b²-a²b/a²-b²*(a/ab+b²-b/a²+ab)]
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/26 00:57:40
![先化简,再求值[a²/a²-b²-a²b/a²-b²*(a/ab+b²-b/a²+ab)]](/uploads/image/z/2688641-17-1.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%5Ba%26%23178%3B%2Fa%26%23178%3B-b%26%23178%3B-a%26%23178%3Bb%2Fa%26%23178%3B-b%26%23178%3B%2A%28a%2Fab%2Bb%26%23178%3B-b%2Fa%26%23178%3B%2Bab%29%5D)
先化简,再求值[a²/a²-b²-a²b/a²-b²*(a/ab+b²-b/a²+ab)]
先化简,再求值[a²/a²-b²-a²b/a²-b²*(a/ab+b²-b/a²+ab)]
先化简,再求值[a²/a²-b²-a²b/a²-b²*(a/ab+b²-b/a²+ab)]
[a²/a²-b²-a²b/a²-b²*(a/ab+b²-b/a²+ab)]
={a²(/a²-b²)-a²b/(a²-b²)*(a²-b²)/[ab(a+b)]}
={a²/(a²-b²)-a/[(a+b)]}
=[a²-a(a-b)]/[(a+b)(a-b)]
=b/[a+b)(a-b)]