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x^5y-x^3y+2x^2y-xy分解因式
人气:355 ℃ 时间:2020-05-22 14:04:16
解答
x^5y-x^3y+2x^2y-xy
=xy(x^4-x^2+2x-1)
=xy[x^4-(x^2-2x+1)]
=xy[x^4-(x-1)^2]
=xy(x^2-x+1)(x^2+x-1)
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