解方程6ec8aac122bd4f6e

 

去分母得: 解得, 经检验是原方程的根. 【解析】先两边同乘以公分母求出x的值,然后要验根
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如图,有一矩形纸片ABCD,AB=10,AD=6,将纸片折叠,使AD边落在AB边上,折痕为AE,再将6ec8aac122bd4f6e以DE为折痕向右折叠,AE与BC交于点F,则6ec8aac122bd4f6e的面积为(    )

6ec8aac122bd4f6e

         A.4                                     B.6                                     C.8                                     D.10

 

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已知点6ec8aac122bd4f6e在双曲线6ec8aac122bd4f6e上,则下列各点一定在该双曲线上的是(    )

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下面四个几何体中,左视图是四边形的几何体共有(    )

6ec8aac122bd4f6e

         A.1个                               B.2个                               C.3个                               D.4个

 

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下列运算正确的是(    )

         A.6ec8aac122bd4f6e         B.6ec8aac122bd4f6e              C.6ec8aac122bd4f6e               D.6ec8aac122bd4f6e

 

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6ec8aac122bd4f6e的平方根是(    )

         A.6ec8aac122bd4f6e                               B.6ec8aac122bd4f6e                                   C.6ec8aac122bd4f6e                               D.6ec8aac122bd4f6e

 

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