计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bbd1f60d0bffa10774c68a88ea723c0.png)
(2)
(利用完全平方公式计算)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bbd1f60d0bffa10774c68a88ea723c0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047c1370dc5ebeef26ed41aa9b77e4ce.png)
更新时间:2022-07-25 12:50:46
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解答题-问答题
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适中
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【推荐1】先阅读下列材料,再解答下列问题:
材料:因式分解:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c869e10e08b280fda8c63438c39b622.png)
解:将“
”看成整体,令
,则原式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b7dc7b8c9ea6e6cbd157aa8bdf59c1.png)
将 “
”还原,得原式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c116386a70d0a4d044454fa70480dbc.png)
上述解题过程用到的是“整体思想”,“整体思想”是数学解题中常用的一种思想方法,请你解答下问题:
(1)因式分解:
;
(2)因式分解:
材料:因式分解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c869e10e08b280fda8c63438c39b622.png)
解:将“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5cb40f73f822f26e065bb08322de53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b7dc7b8c9ea6e6cbd157aa8bdf59c1.png)
将 “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c116386a70d0a4d044454fa70480dbc.png)
上述解题过程用到的是“整体思想”,“整体思想”是数学解题中常用的一种思想方法,请你解答下问题:
(1)因式分解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6eba9f311e9bec716d46dd4bf376e0.png)
(2)因式分解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31697453620190054057ed3c0b379ef7.png)
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