1 . 求下列各式中x的值:
(1)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccb104cc4e7e0243e8c9877df1b6708.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b53803406305133f2a965ba15c436d.png)
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2 . (1)已知
,求
的值.
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9f3eadaf2a098867bb2fbde635c1ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757e2d2f042cd09c68fd9d4e30216905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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3 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeca262edd7089a787d9db062729751.png)
____ ÷ _____ = ______ :____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeca262edd7089a787d9db062729751.png)
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4 . ( )∶( )=
=9÷( )=
.括号中依次为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2008b78a906cf5ecdfd68432fa9ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed81c6aea958eb407dd68e0803c884c4.png)
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