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x4-x3+x-1 求分解因式?
人气:225 ℃ 时间:2020-04-18 11:32:00
解答
(x4+x)+(-x3-1)
=x(x3+1)-(x3+1)
=(x3+1)(x-1)
=(x+1)(x^2+1-x)(x-1)
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