化简1/(x-3)-(x+1)/(x的平方-1)×(x-3)的结果是A.2 B.2/x-1C.2/x-3 D.x-4/x-1选哪一个呀?
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![化简1/(x-3)-(x+1)/(x的平方-1)×(x-3)的结果是A.2 B.2/x-1C.2/x-3 D.x-4/x-1选哪一个呀?](/uploads/image/z/15214191-15-1.jpg?t=%E5%8C%96%E7%AE%801%2F%28x-3%29-%28x%2B1%29%2F%EF%BC%88x%E7%9A%84%E5%B9%B3%E6%96%B9-1%EF%BC%89%C3%97%EF%BC%88x-3%EF%BC%89%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AFA.2+B.2%2Fx-1C.2%2Fx-3+D.x-4%2Fx-1%E9%80%89%E5%93%AA%E4%B8%80%E4%B8%AA%E5%91%80%EF%BC%9F)
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化简1/(x-3)-(x+1)/(x的平方-1)×(x-3)的结果是A.2 B.2/x-1C.2/x-3 D.x-4/x-1选哪一个呀?
化简1/(x-3)-(x+1)/(x的平方-1)×(x-3)的结果是
A.2 B.2/x-1
C.2/x-3 D.x-4/x-1
选哪一个呀?
化简1/(x-3)-(x+1)/(x的平方-1)×(x-3)的结果是A.2 B.2/x-1C.2/x-3 D.x-4/x-1选哪一个呀?
原始=(x²-1-x-1)/(x-3)(x 1)(x-1)
=(x-2)(x 1)/(x-3)(x 1)(x-1)
=(x-2)/(x-3)(x-1)