2/a+1-(a-2)/a²-1÷(a²-2a)/a²-2a+1,a=3先化简再求值,把每一步都写出来.
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![2/a+1-(a-2)/a²-1÷(a²-2a)/a²-2a+1,a=3先化简再求值,把每一步都写出来.](/uploads/image/z/1673693-53-3.jpg?t=2%2Fa%2B1%EF%BC%8D%28a%EF%BC%8D2%29%2Fa%26%23178%3B%EF%BC%8D1%C3%B7%28a%26%23178%3B-2a%29%2Fa%26%23178%3B-2a%2B1%2Ca%3D3%E5%85%88%E5%8C%96%E7%AE%80%E5%86%8D%E6%B1%82%E5%80%BC%2C%E6%8A%8A%E6%AF%8F%E4%B8%80%E6%AD%A5%E9%83%BD%E5%86%99%E5%87%BA%E6%9D%A5.)
2/a+1-(a-2)/a²-1÷(a²-2a)/a²-2a+1,a=3先化简再求值,把每一步都写出来.
2/a+1-(a-2)/a²-1÷(a²-2a)/a²-2a+1,a=3
先化简再求值,把每一步都写出来.
2/a+1-(a-2)/a²-1÷(a²-2a)/a²-2a+1,a=3先化简再求值,把每一步都写出来.