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因式分解-2x^3y^3+6x^2y^2-20xy
人气:447 ℃ 时间:2020-03-25 07:13:45
解答
-2x^3y^3+6x^2y^2-20xy
=-2xy(x^2y^2-3xy-10)
=-2xy(xy-5)(xy+2)
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