3x^4-x^8-1因式分解
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3x^4-x^8-1因式分解3x^4-x^8-1因式分解3x^4-x^8-1因式分解原式=-(x^8-3x^4+1)=-[(x^4-1)^2-x^4]=-(x^4-1-x^2)(x^4-1+x^2)
3x^4-x^8-1因式分解
3x^4-x^8-1因式分解
3x^4-x^8-1因式分解
原式=-(x^8-3x^4+1)
=-[(x^4-1)^2-x^4]
=-(x^4-1-x^2)(x^4-1+x^2)