求满足下列条件的x的值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b34223869f275d06de06c17e0b5bfa9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4040cdb842ac0c432eb43dc75e6991ab.png)
更新时间:2020-12-09 21:51:06
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解答题-计算题
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【推荐2】计算:
(1)
+
+|
|
(2)4
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc132b6f3867736e0df99940b784d.png)
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8561661b1d3088d9b4117e95f5f1827b.png)
(5)
(6)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e79f2442b1fb15d0ec3ebebcffcba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbc9a84f16a94b0ca5db78cba26b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(2)4
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066462354055b0d2998c7fbaed7d07a9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc132b6f3867736e0df99940b784d.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8561661b1d3088d9b4117e95f5f1827b.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48b8c2886d5f3ae054549174da502e23.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce4035ba12342134000ea21ac771e97.png)
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【推荐1】解方程
(1) (x+5)2=16,求x; (2)
(1) (x+5)2=16,求x; (2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8712b9da957b6fe9bb088cb30ec0a83f.png)
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【推荐2】某地气象资料表明:当地雷雨持续的时间t(h)可以用下面的公式来估计:t2=
,其中d(km)是雷雨区域的直径.
(1)如果雷雨区域的直径为9km,那么这场雷雨大约能持续多长时间?
(2)如果一场雷雨持续了1h,那么这场雷雨区域的直径大约是多少(结果精确到0.1km)?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74481b675a56deb4a4a35f263b86c0cc.png)
(1)如果雷雨区域的直径为9km,那么这场雷雨大约能持续多长时间?
(2)如果一场雷雨持续了1h,那么这场雷雨区域的直径大约是多少(结果精确到0.1km)?
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