题型:填空题
难度:0.65
引用次数:275
题号:8471683
已知三角形的三边a、b、c满足
,则三角形是________ 三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6214d094ee248eb1742b9ed8e32dc2e.png)
更新时间:2019-08-15 15:42:07
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【知识点】 因式分解的应用
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适中
(0.65)
【推荐1】已知
的三边为a、b、c,且满足
,则
的形状为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be09dbcc6183d66891891f41f503e8de.png)
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您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】对于二次三项式
(
为常数),有下列结论:
①若
,且
,则
;
②若
,则
;
③若
,则无论
为何值,
;
④若
,且
,其中
为整数,则
可能的取值有8个.其中正确的是________ .(只填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9903fd3cb977f6cb98a6b6349b0938e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6fe1d2bc432b2c89684343a658cdd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6597477c0433f3256cb9fa3ea0485a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f34365e5040ce6944115c8da61bf110.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21aa74e13e140b59e4f67e1c1107342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f840dffff4ed4c7dcc6b4b5f4f6afc1.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57200509096fa35d0dcde19ee76181b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1dc137cbb3d4ee8175e6a545412a781.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1bbd0f138a2fc993751d5f3a625039a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6190a6f6e893a95a01d3f64312dbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次