一道因式分解 4(x-y)²-4(x-y)+1

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一道因式分解4(x-y)²-4(x-y)+1一道因式分解4(x-y)²-4(x-y)+1一道因式分解4(x-y)²-4(x-y)+1解4(x-y)²-4(x-y

一道因式分解 4(x-y)²-4(x-y)+1
一道因式分解 4(x-y)²-4(x-y)+1

一道因式分解 4(x-y)²-4(x-y)+1

4(x-y)²-4(x-y)+1
=[2(x-y)]²-2×2(x-y)×1+1²
=[2(x-y)-1]²
=(2x-2y-1)²

4(x-y)²-4(x-y)+1
=[2(x-y)-1]²
=(2x-2y-1)²