问题 解答题
化简分式:(x-1+
1
x+1
)÷(x+
x
x-1
答案

原式=

(x+1)(x-1)+1
x+1
÷
x(x-1)+x
x-1
=
x2
x+1
x-1
x2
=
x-1
x+1

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