先化简,后求值.化简求值 a²+a/a²+2a+1÷(1+ 1/a-1)其中a=√2 -1
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![先化简,后求值.化简求值 a²+a/a²+2a+1÷(1+ 1/a-1)其中a=√2 -1](/uploads/image/z/2758131-27-1.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%90%8E%E6%B1%82%E5%80%BC.%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC+a%26%23178%3B%2Ba%2Fa%26%23178%3B%2B2a%2B1%C3%B7%281%2B+1%2Fa-1%29%E5%85%B6%E4%B8%ADa%3D%E2%88%9A2+-1)
先化简,后求值.化简求值 a²+a/a²+2a+1÷(1+ 1/a-1)其中a=√2 -1
先化简,后求值.
化简求值 a²+a/a²+2a+1÷(1+ 1/a-1)其中a=√2 -1
先化简,后求值.化简求值 a²+a/a²+2a+1÷(1+ 1/a-1)其中a=√2 -1
这题第一个元素a²应该在分子上吧.于是左边应该是a/a+1,化简结果是(a-1)/(a+1)
结果是1-√2