x4+2x3+x2+1+2(x+x2)因式分解

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2025-06-22 12:45:16
推荐回答(1个)
回答1:

x4+2x3+x2+1+2(x+x2)
=(x2+x)^2+2(x2+x)+1
=(x2+x+1)^2