若整式
,则整式
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d2528142c614780df51612b83889b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db4a4abb1508993594c12bf6bf3cad8.png)
A.0 | B.5 | C.10 | D.15 |
更新时间:2020-12-21 08:04:44
|
【知识点】 整式的加减中的化简求值解读
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知
,则下列说法:
①若
,则
;
②若
的值与
的取值无关,则
;
③当
时,若
,则
或
;
④当
时,
有最小值为7,则
.
其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663d72d9951833efb14aec843bca208a.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e1c681b27df538bd4742f6cd8298ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452ec2a5f08bb746727494536710d115.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97297e52bd89d7f28e039136c67f76aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991501c6225bb57817b2a7de4059cdd0.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff4b08995815b1bcba83e12a9aec4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e46f0b44a7615eb80daa83a378b42da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e97e13943f641fa99ab474f3fac4f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c716601286ac3ef51a4c3c16b12e260.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0d09c61ed9d7289d948d2ab559657f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efcbe82761bee80989e0589a260aff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35bd7d260ed2de03885bdd2a03fde36.png)
其中正确的个数是( )
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】定义一种新运算:
,则当
时,
的值( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f090230408372eeb5e68b4601168c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a07daa7893c0aa4313394369303561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3430589cccb078af87722b93dfda3ba.png)
A.5 | B.8 | C.7 | D.6 |
您最近一年使用:0次