(xy)^3·3x^2·(-4x^2y^3)^2

因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 计算(3xy²)·(-2xy),(2x-y)²-4(x+y)(x-2y), 计算 2xy[4x²y²-3y（xy+x²y）-xy²]（2x-x²-3）（x³-x²-2）（x²）³-2x³[x³-x²（4x+1）]（-1/3xy）²·[xy（2x-y）-3x（xy-y²）] 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy] （-3x^y+2xy)-( )=4x^+xy (-2x²y)³·3xy÷2xy²·4x计算 (-3/2xy)·(2/3x²y-4xy²+4/3y)= [(2xy^3)^2÷(3x)]·[8xy÷(4xy)],其中x=1000,y=-1 化简2(x²y+xy)-3(x²y-xy)-4x²y -2x^2y(-2xy^2)^2+(2xy)^3X(xy^2)说错说错，3xy【2xy-x（y-2）+x】（x+2）（x+3）-（x+6）（x-1）(3/2x^2+xy-3/5y^2)·（-4/3x^2 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^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2 5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2) 3(x^2y+xy)-4(xy-2x^2y)-(-xy) 1.x^2-9y^2/2x-6y 2.2x+6/x^+3x 3.x-2/x^2-4x+4 4.24xy^2z^3/4z^2y 5.-3xy·x/3y x·(9x^3y-3xy^2)÷(-3x^2y) [(x+y)^2-(x-y)^2]÷(-4xy) 怎么写x·(9x^3y-3xy^2)÷(-3x^2y)[(x+y)^2-(x-y)^2]÷(-4xy)