题型:解答题
难度:0.65
引用次数:321
题号:17002526
用简便方法计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61270f2a28f39044d1c7a9261adcc7e1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd28a6abddd450e13ed31674482caec.png)
更新时间:2022-10-14 14:06:25
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