﹣a﹣b+c的相反数是_______ .
16-17七年级·天津南开·课后作业 查看更多[2]
更新时间:2017-12-01 03:34:44
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相似题推荐
填空题
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适中
(0.65)
【推荐1】下列结论:
①若
,则
;
②若
,则
;
③若
,则
;
④若
,则
;
⑤已知a、b、c均为非零有理数,若
,
,
,则
的值为2或
.
其中,错误 的结论是______ (填写序号).
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d12b81ca84e3eb260e5010ba266e258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0471deae2956862a92b230e493f26419.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11335eb752ea0cbc82ffc22576d014aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a54eaac660f73c1a7ac26e5f5123d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b9d5aaaceaa3ac514d17fcfefbf9b4.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01fed893c73f02d5cd333ebcc7b6fb1.png)
⑤已知a、b、c均为非零有理数,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac9eb4f13a6ec140f7050e8d7dde52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd039882414ced3cd59d7a4d5ec76f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a31d3ff0489fd0dec060f5f1cc30117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee07038ecabac13284f34c77e67ec15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
其中,
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填空题
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适中
(0.65)
【推荐2】下列说法:
①若a,b互为相反数,则
=﹣1;
②如果|a+b|=|a|+|b|,则ab≥0;
③若x表示一个有理数,则|x+2|+|x+5|+|x﹣2|的最小值为7;
④若abc<0,a+b+c>0,则
的值为﹣2.其中一定正确的结论是____ (只填序号).
①若a,b互为相反数,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
②如果|a+b|=|a|+|b|,则ab≥0;
③若x表示一个有理数,则|x+2|+|x+5|+|x﹣2|的最小值为7;
④若abc<0,a+b+c>0,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b645d9142f3cf59628ef6af84914bad.png)
您最近一年使用:0次