1 . 已知
,
,且多项式
的值与字母
的取值无关,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fddd67c9219fb85ee3c69e4ba85155ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca16f30d2af67ad73b68a4c766898e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c8573cf2fff14ab3c22a56536d8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 解方程:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d9d8afb1aa2129d909bee1111a77e.png)
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d9d8afb1aa2129d909bee1111a77e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d033ec25b750a5a0d7bed5ab8fe9b9.png)
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3 . 解方程:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d34809e9d7dea650434a2653fd6864.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d34809e9d7dea650434a2653fd6864.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7124ad214228277b44c5d4be68cf574e.png)
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4 . 小明在对关于x的方程
去分母时,得到了方程
,因而求得的解
,你认为他解得的答案正确吗?如果不正确,请求出原方程正确的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82edd752b59d36ac8076f654d110c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80268dd8a5237c9b3cd65e1559a3d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ff4602611d04118121caceccf28954.png)
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5 . 解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957f8b043e693b96a88752a1b5a8efc7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f74a35dcfa224fbce3f037a224069e9.png)
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6 . 若关于
的方程
的解是
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d84a31d58975fd4b8b31645fd51771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 若关于
的方程
的解为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3cb4b16cc4793e1b8db563ac4732d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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8 . 解方程:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/834a9a4a85b6dd0cf522ec1156f3ba4b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a0f67dcf1c481d7e4d37cc82895155.png)
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9 . 若关于
的方程
是一元一次方程,则此方程的解是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fafb358b379ec91dbdb8b0e412a960.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 【定义】若关于
的一元一次方程
的解满足
,则称该方程为“友好方程”,例如,方程
的解为
,因为
,所以有:
,即
,则方程
为“友好方程”.
【运用】
(1)①
,②
,③
三个方程中,为“友好方程”的是 (填写序号);
(2)若关于
的一元一次方程
是“友好方程”,求
的值;
(3)若关于
的一元一次方程
是“友好方程”,且它的解为
,求
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cb7125a7b832153bb37fb614a73e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124ac080c9ee07aee20803c3f75536f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8068f1472e337aa6016c5d3a07ce60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb3e9800ad01d07578ee6cfa38620e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9590113eb7ccd98dddbb2544b44ed6c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124ac080c9ee07aee20803c3f75536f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8068f1472e337aa6016c5d3a07ce60.png)
【运用】
(1)①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72fb3d1881cd86559049f573c6d8217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f3a6f1625225de3fd90ff028af450a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259443a0e442621e401468998cdba445.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620183b5ac6ca0194e6960726c3042a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c82ee55a6bff025f48d0d763141076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1be7302f2e9ff02fee3fcf26e77b1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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