计算
(1)22-(π-1)0+3-1×(-6)
(2)(x+2y)(x-y)(x-2y)
(3)2018×2020-20192
(4)(a+2b+3c)(a-3c-2b)
(1)22-(π-1)0+3-1×(-6)
(2)(x+2y)(x-y)(x-2y)
(3)2018×2020-20192
(4)(a+2b+3c)(a-3c-2b)
更新时间:2022-06-29 16:21:49
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解答题-计算题
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适中
(0.65)
【推荐1】阅读下面问题:
;
;
;试求:
(1)
的值;
(2)
(n为正整数)的值.
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12357b415070d1974b4cae27f0f0cdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2416746b01442db41e72f89b93309e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d819d1e1289314badcb5ec06db27622b.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f7705762be458593f83f82bac2ebd6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42388221a8b19545db7aa38fdf50d129.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc3f7fbed872ad31f3c806196efa992.png)
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