((4x^2-12xy+9y^2)-(4x^2-9y^2))/(2x-3y)

因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 4x^2y+12xy+9y分解因式 已知X+Y=3,XY=-1,求2(X-Y)^4-9(X-Y)^2+12XY 化简:-x(2)-(2xy) *9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢! (x^2+2xy+y^2-4xy)*(x^2-2xy+y^2+4xy) 9-x^2-y^2+4xy 9-x^2-y^2+4xy, (x+y)(x+y+2xy)+(xy+1)(xy-1)(x+y)(x-y)+4(y-1) 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2 （X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程 （-3x^y+2xy)-( )=4x^+xy 因式分解 -4X^2-9Y^2+12XY 9x^2y^2+12xy+4分解因式 9x^2+12xy+4y^2 公式法 （12x^2y-8xy^2+16xy）/-3x+2y-4=? (12x^2y-8xy^2+16xy）/-3x+2y-4=? 计算:12xy^2/(x+y) * (x^2 - y^2)/4xy