(1)已知
,求x的值;
(2)已知
,求x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626ed6f83622346874904ed718ba83fa.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f886909c31b9f835ffe360a3b2594fe.png)
更新时间:2022-09-03 22:20:15
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解答题-计算题
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较易
(0.85)
【推荐1】计算:
(1)4mn2 (2m+3n-n2);
(2)(3m + 4n) 2-(3m-4n)2;
(3)(6a3b2-3a2b2+9a2b)
(-3a2b);
(4)(-8)2020 ×(-0.125)2021.
(1)4mn2 (2m+3n-n2);
(2)(3m + 4n) 2-(3m-4n)2;
(3)(6a3b2-3a2b2+9a2b)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09052719a6d55df23d74d8e3956257ea.png)
(4)(-8)2020 ×(-0.125)2021.
您最近一年使用:0次
解答题-计算题
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较易
(0.85)
名校
【推荐2】(1)计算:
;
(2)计算:(﹣8)21×720×0.12521×(
)19.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399a0d1d9713fb468ff64f190f4fb316.png)
(2)计算:(﹣8)21×720×0.12521×(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
您最近一年使用:0次