计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33a662afd7539ffb386428a17338283.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00231bf54ea4ba26c795bab5842b2361.png)
更新时间:2022-12-19 08:48:58
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相似题推荐
解答题-问答题
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适中
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【推荐1】如果a,b互为倒数,c,d互为相反数,且m的绝对值是1,求代数式2ab-(c+d)+m的值.
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【推荐1】阅读下面的文字,解答问题:
大家知道
是无理数,而无理数是无限不循环小数,因此
的小数部分我们不可能全部地写出来,于是小明用
-1来表示
的小数部分,你同意小明的表示方法吗?
事实上,小明的表示方法是有道理的,因为
的整数部分是1,将这个数减去其整数部分,差就是小数部分.又例如:因为
<
<
,即2<
<3,所以
的整数部分为2,小数部分为
-2.
请解答:
(1)如果
的小数部分为a,
的整数部分为b,求a-b-
的值;
(2)已知:10+
=2x+y,其中x是整数,且0<y<1,求3x-y的值.
大家知道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
事实上,小明的表示方法是有道理的,因为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5be7821872c2f83d39ffaea5216d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
请解答:
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a9d309d2dc8b48602a71701116e7b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a9d309d2dc8b48602a71701116e7b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a9d309d2dc8b48602a71701116e7b8.png)
(2)已知:10+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94de4f4d291d88b8209e2b054a0c16b7.png)
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解答题-计算题
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适中
(0.65)
【推荐1】完成下列各题.
(1)计算:
.
(2)计算:
.
(3)计算:
.
(4)计算:
.
(5)计算:
.
(6)计算:
.
(7)计算:
.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2101a2077a675fb5ac5b831294480a4.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2086da48d462346d7d5bf49c3ee0f8a7.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a091a8419bc82dfe589185fa4ea0acf1.png)
(4)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ef91b4abafea4b61f21b98f7adec2b.png)
(5)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340e34070de9da43b619e47eadd26f67.png)
(6)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49e522e67f50c533ba82d477ceeb38b.png)
(7)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b4eba886bad07f52847098717efa2f.png)
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解答题-计算题
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适中
(0.65)
【推荐2】(1)计算:22+
﹣2sin60°+|﹣
|
(2)先化简,再求值:(
﹣
)÷
,其中x=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1625d21fa2fb85cf8c02d8e99f175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(2)先化简,再求值:(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef9c70c44edb58060de8833b36aabf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b608cafca8d9b0424bacfd3eb04f523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c26c927bd6e3e79c45d52e438186124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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