问题 解答题
计算题x
(1)(
1
4
-1+(
5
0-|
2
-5
|
(2)
2
x2-1
+
1
x+1
答案

(1)原式=4+1-(5-

2
)=
2

(2)原式=

2
(x+1)(x-1)
+
x-1
(x+1)(x-1)
=
x+1
(x+1)(x-1)
=
1
x-1

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