若
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c972205b7d47a23c250f3234f487c845.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c54aeda185bdeb699236565db28d1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6557919a5e1b0c09b035be1b97ecf94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d499e8ca8a0c2c810507e34456181577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c972205b7d47a23c250f3234f487c845.png)
更新时间:2021-01-18 08:26:23
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【推荐1】若a,b互为相反数,c,d互为倒数,则2cd+a+b=_____ .
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