先化简,再求值:
,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7539e7cea42d9b4f507edb93d89c0463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03eb8e6fa55f350635315da9ae4550de.png)
更新时间:2019-02-28 15:48:50
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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
(0.65)
【推荐2】已知多项式A,B,其中
,马小虎同学在计算“
”时,误将“
”看成了“
”,求得的结果为
.
(1)求多项式A;
(2)当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c637440531119143ed6346bd134ea22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce69cd33d105ce280170f0cd0513026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce69cd33d105ce280170f0cd0513026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae1fb8ce55774aed6d909749c9faf0.png)
(1)求多项式A;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce69cd33d105ce280170f0cd0513026.png)
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