(1)计算:
;
(2)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e36f498a90a6709d9d1f769da17e452d.png)
(2)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614bb2c5c1d2970006b3d5e16877e83b.png)
更新时间:2024-04-08 14:48:22
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解答题-计算题
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适中
(0.65)
【推荐1】计算与化简:
(1)
;
(2)
(用简便方法计算);
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3cf1fe15b618dd190980f0671e2ad4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f7552a667297dc53cdaef1eac1e037.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f4bddebc8bd0248c6ed1e37b4eb010.png)
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