1 . 分解因式:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308fb6b132c05c195aacade107eb8d07.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1419e2023acd01880612e7c844894b64.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee4e70bf987104ee9e40ac49b2b3388.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8a239af884789d730d990c1508462d.png)
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2 . 若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81fc05f70de0830a38057574e42ac2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f5817ab7b88e9d8a83dd086ffdb3c2.png)
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3 . 给出6个整式:
,
,
,2,
,
.
(1)从上面的6个整式中选择2个合适的整式,组成一个分式;
(2)从上面的6个整式中选择2个合适的整式进行加法运算,并将运算结果进行因式分解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39241f2eeccaa16d0550d851619bcb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c3fa8692612e51579e3cef22fd8c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ac7fa45d1a150d095f7ae45aab0696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201a886f9a6d757e87e1a5fd404eb5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7c4e0c02c64bea14b0d9d766c2d927.png)
(1)从上面的6个整式中选择2个合适的整式,组成一个分式;
(2)从上面的6个整式中选择2个合适的整式进行加法运算,并将运算结果进行因式分解.
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4 . 分解因式:
(1)
;
(2)
;
(3)
.
【陷阱】___________
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a667efa9eef0a4467dceea4ea7765aab.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57507dae2b30cc7eb2ea006094daa009.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4baf803d7640cce41f8322dba3dd6d.png)
【陷阱】___________
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5 . 证明
肯定能被80整除.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d634482e1ed3b9a2d03810995ff383.png)
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6 . 已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a281f6bd5bdcc3afe5555b4c81168b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8792eaab0b6464e5d07436c64aa751a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a977414a3ad65caf5eee28e0cd175de.png)
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7 . 分解因式:
(1)
.
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecddb4535eae943fd2d598a3bb59fba.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc47536837a962b7f6c25749811193b.png)
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8 . 分解因式:
(1)
.
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bed2ae939b1375ce7ca8a70d153cf4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab6c5ac704d8031fd407233e98bd2a3.png)
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9 . 已知正方形
的边长为
,长方形
的相邻两边长分别为
,则正方形
与长方形
的面积之和等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76a9062ae81256bc8108fa21c4a63c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
A.边长为![]() |
B.相邻两边长分别为![]() |
C.相邻两边长分别为![]() |
D.相邻两边长分别为![]() |
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