4(x-y)2-4x+4y+1因式分解

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4(x-y)2-4x+4y+1因式分解4(x-y)2-4x+4y+1因式分解4(x-y)2-4x+4y+1因式分解=[2(x-y)]^2-4(x-y)+1=(2x-2y-1)^2

4(x-y)2-4x+4y+1因式分解
4(x-y)2-4x+4y+1因式分解

4(x-y)2-4x+4y+1因式分解
= [2(x-y)]^2 -4(x-y) +1
= (2x-2y-1)^2