(12x^2y-8xy^2+16xy)/-3x+2y-4=?
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(12x^2y-8xy^2+16xy)/-3x+2y-4=?
(12x^2y-8xy^2+16xy)/-3x+2y-4=?
(12x^2y-8xy^2+16xy)/-3x+2y-4=?
(12x^2y-8xy^2+16xy)/(-3x+2y-4)=-4xy
(12x^2y-8xy^2+16xy)/-3x+2y-4=?
(12x^2y-8xy^2+16xy)/-3x+2y-4=?
xy-2x+6y-12 xy+8
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[-xy^2(2x+y)-8xy)-x^2y)]除以2xy=计算