上海五院补牙:~SOS~数学~~拜托啦~~

来源:百度文库 编辑:高校问答 时间:2024/05/02 18:30:04
因式分解:
(1)X^4-6X^2+1
(2)3X^4-2X^2-1
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1.(x^2-1)^2-4x^2
=(x^2-1+2x)(x^2-1+2x)
2.(3x^2+1)(x^2-1)
=(3x^2+1)(x-1)(x+1)

1).原式=(x^2-1)^2-4x^2=(x^2-1+2x)(x^2-1+2x)
2).原式=2x^2(x^2-1)+(x^2+1)(x^2-1)=(x^2-1)(3x^2+1)

1.(x^2-1)^2-4x^2
=(x^2-1+2x)(x^2-1+2x)
2.(3x^2+1)(x^2-1)
=(3x^2+1)(x-1)(x+1)