问题
解答题
化简：(1+
|
答案
（1+
）÷1 x x2-1 x
=
÷x+1 x x2-1 x
=x+1 x2-1
=x+1 (x+1)(x-1)
=
．1 x-1
故答案为
．1 x-1
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化简：(1+
|
（1+
）÷1 x x2-1 x
=
÷x+1 x x2-1 x
=x+1 x2-1
=x+1 (x+1)(x-1)
=
．1 x-1
故答案为
．1 x-1