若
,且
为有理数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956c8a181fa84d00dd4da0f8380fac85.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956c8a181fa84d00dd4da0f8380fac85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723b3c988c74ab4a79a3d4d2fdd9777f.png)
更新时间:2017-08-29 08:16:36
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较易
(0.85)
【推荐1】已知
为三角形的三边长,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fe4477d38c7fe9c629df6be2668a5e.png)
______
(填“
”“
”或“
”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fe4477d38c7fe9c629df6be2668a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
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您最近一年使用:0次
填空题
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较易
(0.85)
【推荐2】已知数a、b的对应点在数轴上的位置如图所示,则a﹣3 ______ b﹣3.
![](https://img.xkw.com/dksih/QBM/2018/2/13/1881615932596224/1881676189876224/STEM/81e2122066f04ccc9b8bb915a1f78f24.png?resizew=250)
您最近一年使用:0次