先化简,再求值:
÷(
﹣
),其中a=
+1,b=
﹣1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b38260c5f9e345a2cce0853a07262dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
2020·广东·一模 查看更多[1]
更新时间:2020-04-07 11:41:32
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