发布网友 发布时间:2024-10-22 10:30
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热心网友 时间:2024-10-26 01:27
原式1/(x-1)+(x^2-3x)/(x+1)(x-1),然后通分得 (x+1+x^2-3x)/(x+1)(x-1)=(x^2-2x+1)/(x+1)(x-1)=(x-1)(x-1)/(x-1)(x+1)=(x-1)/(x+1)