计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/410ba12a573f30bddce9a73886ff77b3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862a639b2cd93a9145ffc850891a42ed.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5142f72b6dd6dcd56a370cac983475.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70488c259c63ff6add89eb691f28c38b.png)
更新时间:2024-05-24 11:33:01
|
相似题推荐
解答题-计算题
|
较易
(0.85)
【推荐1】(1)已知:x+2y+1=3,求3x×9y×3的值;
(2)下边是小聪计算(3a﹣b)(3a+b)﹣a(4a﹣1)的解题过程.请你判断是否正确?若有错误,请写出正确的解题过程.
(3a﹣b)(3a+b)﹣a(4a﹣1)
=3a2﹣b2﹣4a2﹣a
=﹣a2﹣b2﹣a.
(2)下边是小聪计算(3a﹣b)(3a+b)﹣a(4a﹣1)的解题过程.请你判断是否正确?若有错误,请写出正确的解题过程.
(3a﹣b)(3a+b)﹣a(4a﹣1)
=3a2﹣b2﹣4a2﹣a
=﹣a2﹣b2﹣a.
您最近一年使用:0次
解答题-计算题
|
较易
(0.85)
【推荐1】计算
(1)
;
(2)
;
(3)2x5y3x2y2xx3y;
(4)(x+1)2(x-1)2(x2+1)2.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a3acdf566f70ee7bf3bead5cc60867.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59255644fc73151e4fe6d35acf2f7bf2.png)
(3)2x5y3x2y2xx3y;
(4)(x+1)2(x-1)2(x2+1)2.
您最近一年使用:0次
解答题-计算题
|
较易
(0.85)
【推荐2】利用平方差公式计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1342112a4e55f34f097e166659d8347b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d12811bc928a73adbd5bb05ff861c9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ecd614ff3b9ff4c8399fc982e5fff8.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d0eb73062bb1a505e168db2ca3357f.png)
您最近一年使用:0次