已知:
,
,
.
(1)当
,
时,求
的值.
(2)若代数式
的值与a的取值无关,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c740178111095dac787a52d95c571d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fb26b718519a3de1024bfbdde589de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d2f354ea2a0e2bc6ab1d3babcd6af0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f06408895febc126c2ae409e807349c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eceb32d89bf3b5bedc57c7d5cbd162a.png)
(2)若代数式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcd52e023b34f44521b8a9574cc08db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6ed14760a4e45b1d48a6f30aebc432.png)
更新时间:2021-11-17 18:36:21
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