若3|x-3|+x^2-6xy+9y^2=0 则x^2y^2+2xy=________

(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) (9x^2y-6xy^2)/3xy 因式分解 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) x^2-xy-6y^2+3xy+y+2 若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思，是3x-2xy-3y/x-2xy-y 3xy(x^2y-xy^2+xy)-xy^2(2x^2-6xy+2x)过程 -3x^2y+6xy^2-9xy=( )(x-2y+3) 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 2x方-3x-6xy+9y 求x^3 - 6x^2y + 11xy^2 - 6y^3 思路x^3 - 6x^2y + 11xy^2 - 6y^3= x^3 - 3x^2y + 2xy^2 - 3x^2y + 9xy^2 - 6y^3= (x^2 - 3xy + 2y^2)(x - 3y)= (x^2 - 2xy - xy + 2y^2)(x - 3y)(x - y)(x - 2y)(x - 3y)求思路 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 若x+y=4 x-y=6 求xy(x^2+y)-y^2(xy+2x)-3xy的值求值 9x^3-6x^2y+xy^2因式分解因式分解9x^3-6x^2y+xy^2 3x^2-xy /9x^2-6xy+y^2=x/( )=( )/9x^2-y^2 2x-3y/xy×2x^2y^2/6x-9y