计算:|﹣1|﹣2sin45°
20.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f939d8428b462353d4253ef0bc341a9e.png)
更新时间:2022-10-04 08:55:20
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解答题-计算题
|
较易
(0.85)
【推荐2】计算:
(1)2
+
-
;
(2)
;
(3)
;
(4)│1-
│+(2019-50
)0-(-
)
.
(1)2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4cee6655a37fc8243928b5dbb09fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f66fc51d58aae7aba5028fca8bd48a5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285b81544d092c82171d14b71da98536.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc1348cc719ec838121f6397fd1d876.png)
(4)│1-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76d884313a7cbe01143777c34bc9382.png)
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