先化简,再求值
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2943d03b8514afbad2e59b6a3ddb9eac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee8d9cf050ffa763917cab5ed80100b.png)
更新时间:2022-12-10 17:58:17
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解答题-问答题
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适中
(0.65)
【推荐2】若实数a,b,c满足
.
(1)求a,b,c;
(2)若满足上式的a,c为等腰三角形的两边,求这个等腰三角形的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac03b7f89682ba96a229a26e7365bdb.png)
(1)求a,b,c;
(2)若满足上式的a,c为等腰三角形的两边,求这个等腰三角形的周长.
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解答题-计算题
|
适中
(0.65)
【推荐1】已知
.
(1)A是几次几项式?
(2)先化简,再求值:
,其中
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f92af7c6236315136715c02a3eb75ea.png)
(1)A是几次几项式?
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d296fba2e6ccb6e69f33d679c1c9843f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】给出定义如下:我们称使等式
成立的一对有理数a,b为“相伴有理数对”,记为
.如:
,
,所以数对
,
都是“相伴有理数对”.
(1)数对
,
中,是“相伴有理数对”的是 ___________;
(2)若
是“相伴有理数对”,则x的值是 ___________;
(3)若
是“相伴有理数对”,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a88aa0824b26f6ba0b7c7491f5e8de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b915b2f3f2d86010b744c275cadc7e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bd20b79d6911da7aa5b2492dd0d39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b23bd615504d9cd6e4bd141a9c432b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4ed0d6e6b0ec8a73e84c4532a86f43.png)
(1)数对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f2bbe7a96bebd043bb5f3e85e8cd38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea079e480f896ce811fecfaaa93311d0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66623ed264a67204032075cf549a18d0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726fb28d488ab1cbd9e90d470a9fbb86.png)
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