因式分解:
(1)(a﹣b)2+4ab;
(2)(m﹣4)(m+1)+3m.
(1)(a﹣b)2+4ab;
(2)(m﹣4)(m+1)+3m.
更新时间:2022-07-18 12:13:11
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【推荐2】(1)数学课堂上老师留了道数学题, 如图1,用式子表示空白部分的面积.
甲,乙,丙,丁4名同学表示的式子是:
甲:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d80e0cc3bb232bdb2b7758999114c00.png)
乙:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326c2c84baa04a1db073e87e3cb8fdc0.png)
丙:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03447582819eeedd81e8105d43996853.png)
丁:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b7e9ce5084f3c444406ceb90ba1a1d.png)
4名同学中正确的学生是______;(填“甲”,“乙”,“丙”,“丁”)
(2)如图2,有一块长为
米,宽为
米的长方形空地,计划修筑东西、南北走向的两条道路,其余进行绿化,已知两条道路的宽分别为
米和
米,求绿地的面积(用含a,b的式子来表示)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887727878660096/2891481779855360/STEM/6e7f898f-1075-45bc-8cf0-869351ffe880.png?resizew=423)
甲,乙,丙,丁4名同学表示的式子是:
甲:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d80e0cc3bb232bdb2b7758999114c00.png)
乙:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/326c2c84baa04a1db073e87e3cb8fdc0.png)
丙:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03447582819eeedd81e8105d43996853.png)
丁:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b7e9ce5084f3c444406ceb90ba1a1d.png)
4名同学中正确的学生是______;(填“甲”,“乙”,“丙”,“丁”)
(2)如图2,有一块长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0515faa76d6ff2fb20b418bfc12d88f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad11633240c60ed8de0ea21a92c2e6df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9878a063abcb6098d10560f2bf2d4b71.png)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887727878660096/2891481779855360/STEM/6e7f898f-1075-45bc-8cf0-869351ffe880.png?resizew=423)
![](https://img.xkw.com/dksih/QBM/2022/1/5/2887727878660096/2891481779855360/STEM/b9fde44c-884d-4017-ae19-95f1152973d8.png?resizew=217)
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