6x^2y^2+xy-15

6x^2y^2+xy-15 x^2-xy-6y^2+3xy+y+2 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 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 1-2/x+y=xy,4y+6x=xy.求xy的解? 因式分解5x^2-15x+2xy-6y 因式分解:5x^2+6y-15x-2xy 因式分解:5X^2 - 15x - 2xy + 6y 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) ( )*3xy=6x^2y+2xy^2 4x^2y-6xy^2+2xy因式分解 因式分解：-4x^2y-6xy^2+2xy 3X^2+XY+Y=15 求XY.