1 . 若实数a,b满足方程组
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3222517f4c339c065af8100f9fda3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc34eada0302668395804832dc405e1.png)
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2 . 分解因式:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74db450c477fac423acba53c6f6dd305.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c5253dd1ac0dda70ca4d75acb23e03.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3936adf562c5229697fee28c1f1cd66a.png)
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3 . 多项式
与
的公因式是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f071fd926ee174a33eec16ef50b2a0ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f1a7e4e357f5c5483379c7b01fe209.png)
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4 . 先分解因式
,再求值.其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1fcf3ccbe3dcf76e038d3afa996ea10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bc03651f597b676bc0094448454ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88ab45267ce9c4740fe7cd1b6f0f043.png)
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5 . 约分:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92adf30a4d9487fefa13c8302ec447fe.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/742b32707c8d700cfbf0ca83644705c8.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2252c13db3d04d7695f9fcf5cbdcaa7f.png)
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6 . 若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8ad692f0e7e47bd8c3665219e20173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68e346bd9925b80e48c68da59f2a0bc.png)
A.16 | B.12 | C.8 | D.0 |
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7 . 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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8 . 若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81fc05f70de0830a38057574e42ac2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f5817ab7b88e9d8a83dd086ffdb3c2.png)
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9 . 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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10 . 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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