x^4-2x^3+2x^2+2x+1因式分解

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x^4-2x^3+2x^2+2x+1因式分解
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x^4-2x^3+2x^2+2x+1因式分解
x^4-2x^3+2x^2+2x+1因式分解

x^4-2x^3+2x^2+2x+1因式分解
三次项符号为正的话,就可以方便分
x^4+2x³+2x²+2x+1
=x^4+2x³+x²+x²+2x+1
=x²(x+1)²+(x+1)²
=(x+1)²(x²+1)

有符号打错了吧