怎么化简(2n²+2n)²=?
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怎么化简(2n²+2n)²=?
![怎么化简(2n²+2n)²=?](/uploads/image/z/19503818-26-8.jpg?t=%E6%80%8E%E4%B9%88%E5%8C%96%E7%AE%80%282n%26%23178%3B%2B2n%29%26%23178%3B%3D%3F)
(2n²+2n)²=【2n(n+1)】²=4n²(n+1)²
再问: 按照a²+2ab²+b²怎么算
再答: (2n²+2n)²=【2n(n+1)】²=4n²(n+1)²=4n²【n²+2n+1)】=4n^4+8n³+4n²
(见图片)![](http://img.wesiedu.com/upload/8/b6/8b6da5b8e3ecc224b7865101437e8fcf.jpg)
再问: 按照a²+2ab²+b²怎么算
再答: (2n²+2n)²=【2n(n+1)】²=4n²(n+1)²=4n²【n²+2n+1)】=4n^4+8n³+4n²
(见图片)
![](http://img.wesiedu.com/upload/8/b6/8b6da5b8e3ecc224b7865101437e8fcf.jpg)
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