请先在草稿纸上计算下列四个式子的值:①
;②
;③
;④
,观察你计算的结果,用你发现的规律得出
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9ad8fbe14b153dbc7678ced389be29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9009535ef967f68721b85df7a51a1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b465b59961fe2912bc0adb82878b2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127b47c9c9ef27fdc5fb0cc659255122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009b005bf0f54971c17b178e94837de1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-07-13 07:52:07
|
【知识点】 利用二次根式的性质化简解读