问题
解答题
先化简，再求值：(1+
|
答案
原式=
÷x-1 x-2 (x-1)2 x(x-2)
=
×x-1 x-2 x(x-2) (x-1)2
=
．x x-1
当x=3时，原式=
=x x-1
=3 3-1
．3 2
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先化简，再求值：(1+
|
原式=
÷x-1 x-2 (x-1)2 x(x-2)
=
×x-1 x-2 x(x-2) (x-1)2
=
．x x-1
当x=3时，原式=
=x x-1
=3 3-1
．3 2