若单项式
与
是同类项,则式子
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d792d00579c6bf77fe502e88d5670a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee7fcded2eb1d9df01e76e66cd65f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f72d294eb8ac6ee1958d8fdbdec88fb.png)
A.-2 | B.2 | C.0 | D.-4 |
更新时间:2020-02-28 13:16:34
|
【知识点】 已知同类项求指数中字母或代数式的值解读