已知:
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8a31dd31148e6e0cb0956217b42547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782e37efef99c940fe699bd786361812.png)
更新时间:2022-09-05 19:19:30
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解答题-问答题
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较易
(0.85)
【推荐2】已知
.
(1)求a,b的值.
(2)求a﹣4b的平方根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/869f8008c12bf07eca50308586fed49e.png)
(1)求a,b的值.
(2)求a﹣4b的平方根.
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解答题-计算题
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较易
(0.85)
【推荐1】已知
,其中
为
的倒数,
.
(1)求
的值,并化简
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a12ceedb54b51959cfe44bd2c9ba14d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce69cd33d105ce280170f0cd0513026.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8df80c3f993028ccabfce1ce506635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce69cd33d105ce280170f0cd0513026.png)
您最近一年使用:0次
解答题-计算题
|
较易
(0.85)
【推荐2】定义一种新运算:观察下列各式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41be8ecff5cd9caaf4abf0414c27a743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483f2a49c9540ba04e08ca7c492b842f.png)
.
(1)请你想一想:
(2)若
,那么
_
(填“
”或“
”)
(3)先化简,再求值:
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41be8ecff5cd9caaf4abf0414c27a743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483f2a49c9540ba04e08ca7c492b842f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47cdd82026108ccbc581d5821bcbd21e.png)
(1)请你想一想:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5f7aec77f2f11160a7ad0a1892e335.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5597cb382642e0b153ac3e5294c48e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd6a6da0ee0cab0a9091f4f27dfe24ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411837b4b3078d05b43cb0439259a362.png)
(3)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f92e74cb5d44079649f9398895ca84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/979420edfa7cf568fab8ee467e767076.png)
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解答题-问答题
|
较易
(0.85)
【推荐1】当
为何值时,分式的值为0?
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50bf89c330ddfff07f527a4e421399b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb3167bdb2f333e271b67f26171948b.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe370db6faa1c02badf9c73c77351dfd.png)
您最近一年使用:0次
解答题-问答题
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较易
(0.85)
【推荐2】已知分式
.
(1)当
时,求分式的值;
(2)当
为何值时,分式有意义?
(3)当
为何值时,分式的值为0?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb422546614ab0649a1c8b4c1b05119.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-计算题
|
较易
(0.85)
【推荐1】计算
(1)已知
﹒求
的值.
(2)先化简
,然后从
中选取一个的合适的数作为x的值代入求值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe3bd1b6aecac8d4a7382ee9e50417a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd87da6603aa39099976425863fc55b.png)
(2)先化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319d4912d2beeccfba9b066c347fa700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec754a151dd361612df869d7818bd1a4.png)
您最近一年使用:0次