名校
1 . (1)利用公式计算①
;②
.
(2)已知
,求下列各式之值:①
;②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b663770e7dedbf80bab51d62c0cc2e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26683320c689307fa41d69f2c30427e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329f45b612883c06ddd417b89c6dc014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25173cc4a7a3f1124f2103e22dfff120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e345ea6dd144f89776b613b1c95944e.png)
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名校
2 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb10f496c470d252d4393403e5ab9e8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a203fe72cde128df1ca0043c3f59b10f.png)
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3 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37989da65230bb8d2284c689e11f2cd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531ec01ff3fd2e4d83494ba0fb76e600.png)
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4 . 先化简,再求值:
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3839232507ffcc8c2c366c3a93faf059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d2b01f86fb5a373af6b089cf3d891b.png)
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5 . 先化简,再求值:
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b39852431f7cdab52d1f35eaa2cd9e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
您最近一年使用:0次
名校
6 . (1)计算:
;
(2)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2fb9a92f7fe774f29562169f164c44.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db44b846f75cb3cd875f6149ba38c43a.png)
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7 . (1)计算:
;
(2)利用平方差公式计算:
;
(3)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4574acd97ef4c2333b88c3381646181.png)
(2)利用平方差公式计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699807c90c32ca5cf1fbb3976e6020a8.png)
(3)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be12a05b2b43cc61da9317330815568.png)
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8 . 计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d938b8be6eae61c9d7e1434c8085e227.png)
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9 . 计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc467f48a9ab8db66e159360cec8fa3.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc467f48a9ab8db66e159360cec8fa3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e252470fe67bbe5a448bff663a0ccb22.png)
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10 . 计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99ce200681782698ea27ec292f115f8.png)
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