已知:
,
求:(1)
的值
(2)
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b19937baa62d99afe78b621e4b0634.png)
求:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cdb1e5e2c73f71f5c3e6b244e631386.png)
更新时间:2018-08-28 13:51:02
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相似题推荐
解答题-应用题
|
适中
(0.65)
【推荐1】问题情境:若x满足
,求
的值.
解:设
,
,则
,
,
所以![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f047ed8c8e00b92dbbb329ec8c3b511.png)
请仿照上例解决下面的问题:
(1)若x满足
,求
的值.
(2)若x满足
,求
的值.
(3)如图,正方形
的边长为x,
,
,长方形
的面积为300,四边形
和
都是正方形,
是长方形,求四边形
的面积(结果必须是一个具体数值).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e9c3f219556dcded57301a4dcd7d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d378578d020dd623d3d12eabf1b5d0.png)
解:设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c97e4ac893a9819b80f2c183079f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588e96605cb12e11e52298a08cfce304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851c7001e81432f0d7687518dfe54018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07737f1a9a5cdf7b3420807683b63aee.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f047ed8c8e00b92dbbb329ec8c3b511.png)
请仿照上例解决下面的问题:
(1)若x满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb3f7ba8801eebc346e8e4ff8794e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a137a089ca4ec25d60c78d8fd0452400.png)
(2)若x满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8c34207ffcee906d0983cd8bb3a31e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67339f73036a4e068f51488f13e30786.png)
(3)如图,正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d30cd3e53a9df24fe6da5e8a3a7ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9b26213c4bd443406227ee01d5f4c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f515246d9ee093bfbf9983fd47357d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060b114e21d0f6ff11b9391f9a77f3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd5e1e479972f2b5ec84cf00e85a9b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013e00092604241a46e42342a8cb326c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec7aa4a34b2b00ce2e7f7e3fb5bb8c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/694cd484-b2db-424c-a2ca-4e084b1134a8.png?resizew=117)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】(1)已知x=
+1,求x2-2x-3的值;
(2)已知64(x+1)3=27,求x3+1的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
(2)已知64(x+1)3=27,求x3+1的值
您最近一年使用:0次