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因式分解x^5y^2-x^3-3xy+3
人气:480 ℃ 时间:2020-02-06 04:32:28
解答
x^5y^2-x^3-3xy+3
=x^3(x^2y^2-1)-3(xy-1)
=x^3(xy+1)(xy-1)-3(xy-1)
= (xy-1)(x^4y+x^3-3)
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