(30x^4y^3-24x^3y^2)/(-6x^2y)(30x^4y^3-24x^3y^2+2x^2y)/(-6x^2y)上面落了以此为准

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(30x^4y^3-24x^3y^2)/(-6x^2y)(30x^4y^3-24x^3y^2+2x^2y)/(-6x^2y)上面落了以此为准(30x^4y^3-24x^3y^2)/(-6x^2y)(3

(30x^4y^3-24x^3y^2)/(-6x^2y)(30x^4y^3-24x^3y^2+2x^2y)/(-6x^2y)上面落了以此为准
(30x^4y^3-24x^3y^2)/(-6x^2y)
(30x^4y^3-24x^3y^2+2x^2y)/(-6x^2y)
上面落了以此为准

(30x^4y^3-24x^3y^2)/(-6x^2y)(30x^4y^3-24x^3y^2+2x^2y)/(-6x^2y)上面落了以此为准
(30x^4y^3-24x^3y^2)/(-6x^2y)
=6x^3y^2(5xy-4)/(-6x^2y)
=-xy(5xy-4)