下列各式中正确的有( ).
(1)
(2)
(3)
(4)
(5)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0868e9e655b51900d03103a0b626d4ab.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2562d887e8c5c2b3e7e43c860268f0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ebbe8502f851902b394dab81eea117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1c9845c9569f3164ed09135362c402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f47cc6a1ca87b7b3313874a5fecb70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0868e9e655b51900d03103a0b626d4ab.png)
A.2个 | B.3个 | C.4个 | D.1个 |
更新时间:2018-12-04 16:25:27
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【推荐2】已知(x﹣1)|x|﹣1有意义且恒等于1,则x的值为( )
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