X^4-3x^2+1 因式分解

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X^4-3x^2+1因式分解X^4-3x^2+1因式分解X^4-3x^2+1因式分解x^4-3x^2+1=(x^2)^2-3(x^2)+1=(x^2)^2-2(x^2)+1-x^2=(x^2-1)^2

X^4-3x^2+1 因式分解
X^4-3x^2+1 因式分解

X^4-3x^2+1 因式分解
x^4-3x^2+1
=(x^2)^2-3(x^2)+1
=(x^2)^2-2(x^2)+1-x^2
=(x^2-1)^2-x^2
=(x^2-x-1)(x^2+x-1) 有理数范围止!
=(x-1/2-√5/2)(x-1/2+√5/2)(x+1/2-√5/2)(x+1/2+√5/2) 实数范围内!

(4x²+1)(x²-1)