计算(直接写出结果)
(1)
______.
(2)
______.
(3)
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(4)
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6f9ecbb0f0f97bd02b3bb2cafa5f2a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6c6f2ff544b583e0e9e689d7ab467f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1536874ecbe297a7bd3d0d148ded99.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8f32af42db649f059bbe65df8ee205.png)
更新时间:2024-05-05 14:22:51
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相似题推荐
解答题-计算题
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适中
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【推荐1】计算:
(1)(
﹣m﹣2)•![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f99986a68b5e9acb24d88805beaffee.png)
(2)(
﹣
)2÷(
﹣
)
(1)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e803fc60a9a6aa8589dbd172489666f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f99986a68b5e9acb24d88805beaffee.png)
(2)(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c70fcaa661df4fbcad820b439accda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9237dbe3a4f28962ef2870b4e7dab599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2c49fb9a378622801ce4819dfce934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20564711b78458bcb60b7052d8b70c43.png)
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解答题-问答题
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【推荐3】阅读下面材料并解答问题材料:在处理某些分式问题时,“分离常数法”是常用的变形技巧之一.分离常数法是将分式分成一个整式与一个分子为常数的分式的和的形式.通过分式分离常数法可以将复杂的分式简化为一个更简单的形式.
如:若分式
的值为整数,求整数x的值.
我们先将该分式变形:
,因为
的值为整数,所以只要
的值为整数,而分子是个常数,所以只要
是1的约数即可,即
,所以
或
.
(1)将下列分式化成一个整式与一个分子为常数的分式的和的形式:
①
,②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971c4c51e89632317c49593b9336a115.png)
(2)应用:①若分式
的值为整数,求整数x的值;
②设
,
,
,其中
,比较m、n、p的大小.
(3)拓展:已知x、y满足
,且x、y为正整数,求x、y的值.
如:若分式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1491b33d6d4ae9f8e996a0afbe642322.png)
我们先将该分式变形:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776499ba035066c13994937be6a1cd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1491b33d6d4ae9f8e996a0afbe642322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1efd69e4c46be70974d2acf5158bc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5a9de8a72dda70e3eefeb0a408ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c875c3d2e6236373f711717b57bbec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)将下列分式化成一个整式与一个分子为常数的分式的和的形式:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdaf95aa8d3141a7540f469d0c18f948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35a79193f196ac171ffbf31a141225b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971c4c51e89632317c49593b9336a115.png)
(2)应用:①若分式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23bdb6f274aa52fb8fcb65645107905.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38436c0783d2d6066e91c907e502425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db386ce4deb0b3621892da5dda3676ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa673cbd7708a48edf3e2a8f9e304385.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(3)拓展:已知x、y满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560b9e1b8fbffb68e4711aa989a49fd7.png)
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【推荐2】(1)化简
.
(2)计算:
(结果化为只含有正整指数幂的形式)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f72da054c40eb0bfe14f475a8ff4f50.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e909264880a2659c1f24c48871eee27a.png)
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真题
【推荐1】观察下面的等式:
,
,
,……
(1)按上面的规律归纳出一个一般的结论(用含n的等式表示,n为正整数)
(2)请运用分式的有关知识,推理说明这个结论是正确的.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660f41a92328772f61ade4e991d5ac0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ebcc3f6b9a6e9b4dcd68382ba32a00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ed415a0132cd137cf6f91e1604cb4b.png)
(1)按上面的规律归纳出一个一般的结论(用含n的等式表示,n为正整数)
(2)请运用分式的有关知识,推理说明这个结论是正确的.
您最近一年使用:0次