X4-3x2+1因式分解 4 和2是次数 快
问题描述：
X4-3x2+1因式分解 4 和2是次数 快
答
X4-3x2+1
=X4-2x2+1-x2
=(x2-1)2-x2
=(x2+x-1)(x2-x-1)
答
x^4-2x²+1
=x^4-2x²+1-x²
=(x²-1)²-x²
=(x²-1+x)(x²-1-x)