化简求值:
,其中m=3,n=4.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce74da650d88a945bac8da2349f2fea4.png)
更新时间:2020-01-04 22:21:44
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解答题-计算题
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【推荐1】先化简,再求值:
,请在1,2,3中选择一个合适的数作为
的值代入求值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf183284870407c88764ae3bd37af34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-计算题
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适中
(0.65)
【推荐1】计算:
(1)
-(π-2018)0+3-1; (2)(-3ab2)3÷(
a3b3)·(-2ab3c).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9baf05ebd74b534673de8e8e22d6589d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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解答题-计算题
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适中
(0.65)
【推荐2】概念学习规定:求若干个相同的有理数(均不等于0)的除法运算叫做除方,如
,
等.类比有理数的乘方,我们把
记作
,读作“2的圈3次方”,
记作
,读作“
的圈4次方”,一般地,把
(n个a,a≠0)记作
,读作“a的圈n次方”.
(1)直接写出计算结果:
,
;
(2)试一试,将下列运算结果直接写成幂的形式:
;
;
;
(3)想一想:将一个非零有理数a的圈
次方写成幂的形式为 ;
(4)算一算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adccee9f2e9cb57de88f911f1862f352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860c6fb4bb88a6993ab4ba65cce45db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adccee9f2e9cb57de88f911f1862f352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafd31988c1d9917cbb6d7e418b6bd07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860c6fb4bb88a6993ab4ba65cce45db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9345bccc985b1e24e3c0c4abeea3e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dbf80cb71406fd14621139149f7ed9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d20ce9f63de8decbc081148cfee0a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20fa4b7f4214d2066bea04afa91387b.png)
(1)直接写出计算结果:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773621e325295e1cb5affb2dd783f56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f580f0093977bf12a4ba68e24a9ea28.png)
(2)试一试,将下列运算结果直接写成幂的形式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85076ba8872632159bfdf7786a0e926d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754e0092568065a0d30a6731fed5171a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7141ab1790534977d76c2348ef8f887d.png)
(3)想一想:将一个非零有理数a的圈
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd21278555a3211c86dd52af01665dfa.png)
(4)算一算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8fdc101c60549e5cdfe70c8d0f0355.png)
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