﹙m²+2m﹚²-2m²-4m+1因式分解

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﹙m²+2m﹚²-2m²-4m+1因式分解
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﹙m²+2m﹚²-2m²-4m+1因式分解
﹙m²+2m﹚²-2m²-4m+1因式分解

﹙m²+2m﹚²-2m²-4m+1因式分解
上式可以化简为﹙m²+2m﹚²-2(m²+2m)+1
令m²+2m=t
所以式子就是(t-1)²
将m²+2m=t代入