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因式分解:x5+2x4-3x3-6x2+2x+4
人气:451 ℃ 时间:2020-02-05 22:22:42
解答
x5+2x4-3x3-6x2+2x+4
=x^3(x^2+2x-3)-2(3x^2-x-2)
=x^3(x+3)(x-1)-(3x+2)(x-1)
=(x^4+3x^3-3x-2)(x-1)
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