计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749b138ba5b747fca1cd5b1dfd3593fc.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38571f4dd6b77416d120e7c4175ca9f8.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749b138ba5b747fca1cd5b1dfd3593fc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38571f4dd6b77416d120e7c4175ca9f8.png)
更新时间:2020-10-08 17:24:54
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相似题推荐
解答题-问答题
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适中
(0.65)
【推荐2】2a·(a+1)- a(3a- 2)+2a2 (a2-1)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】计算下列各题:
(1)
+
+
;
(2)(3+
)(3﹣
)+
(2﹣
).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a196420e2005a4357d5defe64ef95a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c35c33bcd22d04604b533897bde2b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5be7821872c2f83d39ffaea5216d09.png)
(2)(3+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐2】阅读材料:像
这样,两个含有二次根式的代数式相乘,积不含有二次根式,我们称这两个代数式互为有理化因式.在进行二次根式计算时,利用有理化因式,可以化去分母中的根式,即为分母有理化.
例如:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10574280419fe243629ccd2c1868ec0.png)
解答下列问题:
(1)请写出一个
的有理化因式;
(2)将
分母有理化;
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3689ff04ee574697a756f64faa022416.png)
例如:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18155b34609b4836e0344de16c886ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10574280419fe243629ccd2c1868ec0.png)
解答下列问题:
(1)请写出一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a672590b05847a76b3eb3ddc5282468.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16316f9d978d1ea59ef9afbec08720bc.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267dc35824302e24f699814e6c217e5e.png)
您最近一年使用:0次