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帮忙算一下行吗?谢谢 (1)x^4-10x^2+9 (2)x^4-6x^2-27
人气:426 ℃ 时间:2020-05-21 09:06:26
解答
(1)x^4-10x^2+9
=(x²-9)(x²-1)
=(x+3)(x-3)(x+1)(x-1)
(2)x^4-6x^2-27
=(x²-9)(x²+3)
==(x+3)(x-3)(x²+3)
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