下列说法正确的是__________ (填序号)
①若
.则一定有
;②若
,
互为相反数,则
;③几个有理数相乘,若负因数有偶数个,那么他们的积为正数;④两数相加,其和小于每一个加数,那么这两个加数必是两个负数:⑤0除以任何数都为0;⑥若
,则
.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0954bd777f502a84b63bc5b4a1f18fbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b837fdcb4778d17d11fa87c05512c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8234fb1861336bfbb7aa4971d2dfdd64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65420b63eef35f4f03518153ed1809d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb437ef420d5118409e0e16819c573.png)
更新时间:2019-11-21 08:15:23
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