在实数范围内因式分解:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4100a446397832b0fdc81a5814c07e0a.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4100a446397832b0fdc81a5814c07e0a.png)
更新时间:2024-01-23 17:58:53
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【推荐1】甲乙两人进行如下游戏:现有1、2、3、4、5、6、7、8共8个数,每人每次从中勾去2个数,两人轮流进行.经过3次勾数后,还剩两个数,这时所剩两数之差的绝对值即为先勾数的人所得的分数.若甲先开始且希望自己尽可能多地得分,则甲可以保证自己至少得______ 分.
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【推荐2】数轴上点
,
,
表示的实数分别为
,
,
.定义:
表示点
,
,
中任意两点距离的最大值.例如:当
,
,
时,
,
,
,
.已知:
,
,
,那么
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659306fed1e0baeaa4fbf1b81faee2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce4430b8b9b0c78de693513a7f88915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c943e96aaa9e52250185980240002da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fadd2e6f0aa16c2c466c904474ffc79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/705df78238dae185eafdf6969f91316e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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【推荐1】有下列说法:
①在同一平面内,过直线外一点有且只有一条直线与已知直线平行;
②无论
取任何实数,多项式
总能分解成两个一次因式积的形式;
③已知二元一次方程组
的解也是二元一次方程
的解,则a的值是2;
④若
,
,则
;
其中正确的说法是_________ .
①在同一平面内,过直线外一点有且只有一条直线与已知直线平行;
②无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2f4715d716e25157277e07f39f249b.png)
③已知二元一次方程组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bccb9054fa9742065c692ab7c9dafbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3573b9d9b80fde8886ab29449b8e778.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6489a3f4bce54a5539347a0843d953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58edb0ce5780ea115cf1a2fcfbf7d822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e61e0a1bc2ab34fe0cd1de9f59b0e6.png)
其中正确的说法是
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