先化简,再求值:
①
,其中
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
②
,其中
,
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa543adf7d00b31ce5bf23e26c9f6c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7b9308d965acba4cd3447fb0a4cf9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a4855e41722215143ba08691e3485b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ae201380896f47a2ac1a4a48374f5f.png)
更新时间:2019-11-14 11:13:56
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【知识点】 整式的加减中的化简求值解读
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解答题-计算题
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适中
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【推荐1】(1)先化简,再求值:
,其中
,
;
(2)解方程
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b99d928118df2b8dc3b29c2d14279f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a27a9d5d345f1e04020bfea2770ac.png)
(2)解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0ba50daca5d11f3f1ea4211cde6a8d.png)
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