由下列等式
=2
,
=3
,
=4
…所提示的规律,可得出一般性的结论是____ (用含n的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc7773e3497a638f6a005a9a24bb1a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1002f6d81a734b5655f0bdd749bdf24a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb98eb1e197878afea3b93dee3f38a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45e314f3118a6c1734924f00cbfc993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9fe37fdd3eb71bdbe1839fe02ddfe29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2565a51313c163b927136eae8f485f86.png)
更新时间:2020-07-10 17:40:22
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【推荐2】一个长方形的长和宽分别是6
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cm,则这个长方形的面积等于________ cm2,周长等于________ cm.
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