x^2 - 5xy + 6y^2 -3x+6y因式分解同上

因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 诺x+y=6,xy=4 求(5x-4y-3xy)-(8x-y+2xy) (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 3x平方-5x平方y-{2x平方y+6xy平方-[2xy平方-3x平方y+(3x平方y-4xy平方】} 因式分解 求过程 x-xy+3y-3x 2x+xy-y-4x+5y-6 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 因式分解 （3x+2y）-（x-y）² x²-xy+3y-3x 2x²+xy-y²-4x+5y-6 x^2-xy-6y^2+3xy+y+2 4xy-[(x²+5xy-y²)-(3xy-1/2y)]x=3,y=-6 2x^2-3xy+6y^2-x^2+4xy-5y^2 x^2+5xy+6y^2+x+3因式分解 3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程 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 化简(3x^2-5xy)+{-x^2-[-3xy+2(x^2-xy)+y^2]}