计算:
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.
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更新时间:2018-02-12 13:55:57
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【知识点】 整式乘法混合运算
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解答题-计算题
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适中
(0.65)
【推荐1】小明和小华分别用两个长度相同的铁丝围长方形,小明把铁丝做成如图甲的长方形,小华把铁丝做成如图乙的长方形,若甲,乙两个长方形的面积分别为
,
(1)请计算乙的面积比甲的面积大多少?
(2)若把该铁丝做成一个正方形,该正方形的面积为
.已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/34692473-ea13-4289-858c-dba56fddf8ea.png?resizew=188)
(1)请计算乙的面积比甲的面积大多少?
(2)若把该铁丝做成一个正方形,该正方形的面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d6d263d920b2a20653901de155723d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
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