-2x^2y+12xy-16y/16y^2-16xy^2+4x^2y^2怎么约分

因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) （12x^2y-8xy^2+16xy）/-3x+2y-4=? (12x^2y-8xy^2+16xy）/-3x+2y-4=? 因式分解-x^2y+8xy^2-16y^3 x^+2xy+y^+4=16 x^-2xy+y^=16 求(3xy+6y^)+|x^-(2xy+2y^-3x^)|的值 (-x-y)(x^2+xy+y^2) 化简x^-y^/x^-2xy+y^ 2*(x-y)²(y-x)(xy) 已知x+y=-10,xy=16求x²+y²,(x-y)²,(x+2)(y+2),x²-xy+y².求值！ 已知x^2+xy=16 y^2+xy=9 求(x+y) (x-y)分别是 x+y x-y 不是乘 -2x^2y+12xy-16y/16y^2-16xy^2+4x^2y^2怎么约分 16y²-16xy²＋4x²y²／﹣2x²y＋12xy－16y 约分求解下, (-4x^2y^2+12x^3y^2-16x^4y^4)/(-2xy)^2急求 x^2-4xy+4y^2=16(x+y)^2-x-y-12=0 X-Y/2X+2Y XY/X+Y² 合并同类项16x^2y-7(xy^2+xy-x^2+7y^2 因式分解：x×x-xy-2y×y-x-y 已知x+y=1,xy=3/16,求x³y-2x²y²+xy³