计算
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cef40cf68c657b4f09737e1633e4d9a.png)
更新时间:2024-05-04 12:45:25
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相似题推荐
解答题-计算题
|
适中
(0.65)
名校
【推荐1】阅读理解题:
定义:如果一个数的平方等于
,记为
,那么这个数i就叫做虚数单位,我们把形如
(
,
为实数)的数叫做复数,其中
叫这个复数的实部,
叫做这个复数的虚部,它的加,减,乘法运算与整式的加,减,乘法运算类似.
例如计算:
;
;
;
.
根据以上信息,完成下列问题:
(1)填空:
______;
(2)计算:
;
(3)计算:
.
定义:如果一个数的平方等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c789a7cd7ac2b8b96dc879c6c8161ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eed3d568acf369a315c7ab41c081049.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
例如计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bedf6fabb9910d93f720bcdbe7f7a64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb61c60777f48211bda98747936720a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe24c934eaa5bca26fd8c814818e0c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af7e7a51a165f93d64e1410e6ec4c9a.png)
根据以上信息,完成下列问题:
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c807965b8b8c329a9786bfa99937981a.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe8d11ca83e248af69e02f634f383f2.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f4108cbf1544af3e3dda418d3f3deb.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
【推荐1】(1)计算:
÷
﹣
×
;
(2)计算:(
﹣5
)×
;
(3)已知x=
+1,y=
﹣1,求代数式
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46f33f578fbb88a7525ef32e7126856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f66fc51d58aae7aba5028fca8bd48a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde029ac94c601540583c64bc48c17bb.png)
(2)计算:(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a617be66ea859b39ff0ce0f8a831d174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
(3)已知x=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a203570ba8aba658b6ee6fd05e5818.png)
您最近一年使用:0次