问题标题:
4x四次方-4x²+1因式分解
问题描述:
4x四次方-4x²+1因式分解
沈春龙回答:
4x四次方-4x²+1
=(2x²)²-2×2x²+1
=(2x²-1)²
=[(x√2)+1][(x√2)-1]
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4x四次方-4x²+1因式分解