(a-1)/(a²+2a+1)与(5)/(1-a²)通分后的结果是(a-1)/(0a²+2a+1)与(5)/(1-a²)通分后的结果是
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![(a-1)/(a²+2a+1)与(5)/(1-a²)通分后的结果是(a-1)/(0a²+2a+1)与(5)/(1-a²)通分后的结果是](/uploads/image/z/1797386-50-6.jpg?t=%EF%BC%88a-1%EF%BC%89%2F%EF%BC%88a%26%23178%3B%2B2a%2B1%EF%BC%89%E4%B8%8E%EF%BC%885%EF%BC%89%2F%EF%BC%881-a%26%23178%3B%EF%BC%89%E9%80%9A%E5%88%86%E5%90%8E%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AF%EF%BC%88a-1%EF%BC%89%2F%EF%BC%880a%26%23178%3B%2B2a%2B1%EF%BC%89%E4%B8%8E%EF%BC%885%EF%BC%89%2F%EF%BC%881-a%26%23178%3B%EF%BC%89%E9%80%9A%E5%88%86%E5%90%8E%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AF)
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(a-1)/(a²+2a+1)与(5)/(1-a²)通分后的结果是(a-1)/(0a²+2a+1)与(5)/(1-a²)通分后的结果是
(a-1)/(a²+2a+1)与(5)/(1-a²)通分后的结果是
(a-1)/(0a²+2a+1)与(5)/(1-a²)通分后的结果是
(a-1)/(a²+2a+1)与(5)/(1-a²)通分后的结果是(a-1)/(0a²+2a+1)与(5)/(1-a²)通分后的结果是
如图所示,
(a-1)/(a²+2a+1)=(a-1)/(a+1)²=(a-1)²/[(a-1)(a+1)²]
5/(1-a²)= -5/[(a-1)(a+1)]= -5(a+1)/[(a-1)(a+1)²]