x^2-2xy+y^2-5x+5y-6 因式分解,

因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 2X^+XY-Y^-4X+5Y-6 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) 因式分解 （3x+2y）-（x-y）² x²-xy+3y-3x 2x²+xy-y²-4x+5y-6 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] 因式分解 求过程 x-xy+3y-3x 2x+xy-y-4x+5y-6 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】} x+y+xy=5 (x^2)y+x(y^2)=6 解方程组 6（x-y)-7(xy)=21,2(x-y)-5(x+y)=-1 图解(x+2y)(x+3y）=x平方+5xy+6y平方 4xy-[(x²+5xy-y²)-(3xy-1/2y)]x=3,y=-6 √x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y ∫x(∫x+2∫y)=∫y(6∫x+5∫y),求：（x+∫xy-y)/(2x+∫xy+3y) x^2-xy-2y^2-x+5y-2 -x^5y-xy+2x^3y 已知x>0,y>0,且x+6y=5根号xy,求(2x+根号xy-y)分之(x+根号xy+2y)的值