先化简,再求值:(
)÷
,其中x=
+1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ec2bccf980b9334a3392f78c0bc5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d18c01240ff6afbfb4854bc584f97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
更新时间:2018-05-03 20:04:39
|
相似题推荐
解答题-计算题
|
适中
(0.65)
【推荐1】观察下面的变形规律:
=
-1,
=
-
,
=
-
,
=
-
,…
解答下面的问题:
(1) 若
为正整数,请你猜想
=________;
(2) 计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09a83972a9068dfff763edd2925358c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a91c33ebbacfc3e46515737af771e9c.png)
![](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/0992e5d4f7c7073e3f71108f51cd8fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4800088f8bba052c52528d680e75fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a1a7a04d4c10e7a45714482bfb58d.png)
解答下面的问题:
(1) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42388221a8b19545db7aa38fdf50d129.png)
(2) 计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560620e82262b030532b9d8447e3ad4c.png)
您最近一年使用:0次
解答题-计算题
|
适中
(0.65)
名校
【推荐2】(1)解方程:.
(2)先化简,再求值:,其中:
.
您最近一年使用:0次