先化简,再求值:
﹐其中a=-8,b=2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79abe2401e68b57a6820921a1801813.png)
更新时间:2022-05-19 09:57:44
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解答题-计算题
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较易
(0.85)
【推荐2】计算:
(1)
;
(2)
;
(3)
;
(4)
用整式乘法公式进行计算
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d26c59ccb0c772f5ad62f8e03543db.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a22f2e591eed6bc3fa713a6059bce8.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcf2c7f260145c979c95070358fa896.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa24a9ffd9e62fe960e1d140cb86257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
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