1 . 将下列各式分解因式:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696222297742f53a40772affeee2f607.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bec6f23e616b7305b8d3bc87ba50de0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878734f32648040d4c704a46f74ad925.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8096ae1c2bdf9f4dbc222ed28a342a.png)
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2 . 分解因式:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d624efdf5ef55c5c6e19dfc04657e2a9.png)
____________ ;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac073ac4e4e08381a467f8c163157c8.png)
____________ ;
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68895b1a76d28729fffdeae4e43b1aa3.png)
____________ .
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d624efdf5ef55c5c6e19dfc04657e2a9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac073ac4e4e08381a467f8c163157c8.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68895b1a76d28729fffdeae4e43b1aa3.png)
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3 . 阅读下列因式分解的过程,再回答所提出的问题:
.
(1)上述因式分解的方法是______________,共应用了_________次;
(2)将下列多项式分解因式:
;
(3)若分解
,则需应用上述方法________次,结果是_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78baf3017f78c5ceed605662f4db507a.png)
(1)上述因式分解的方法是______________,共应用了_________次;
(2)将下列多项式分解因式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffae608b6415e498f255a5d69544b54.png)
(3)若分解
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2023193718545c2815507a445736aa4.png)
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4 . 分解因式:
(1)
.
(2)
.
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d668594619ab48bac105326cfea6f07.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba3c1710f845b2bdb4935da53dd0e71.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb4c70780ad54c5daf4be2607d1cc94.png)
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5 . 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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6 . 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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7 . 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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8 . 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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9 . 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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10 . 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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