(-1/2x^2·y)^3·(-3xy^2)^2

计算:(2分之1x^(2)y-2xy+y^(2))·3xy (1/2x²y-2xy+y²)·3xy等于多少? [(2xy^3)^2÷(3x)]·[8xy÷(4xy)],其中x=1000,y=-1 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）] 计算3xy[2xy-x(y-2)+x-1] xy(xy+1)+xy+3-2(x+y+1/2)-(x+y-1)^2因式分解 (-1/3xy)^2•[xy(2x-y)-2x(xy-y^2)] (-3分之1xy)的平方×[xy(2x-y)-2x(xy-y的平方)] XY(XY+3)+(XY+4)+4(X+Y+1)-(X+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 已知x-y=1,xy=5,则x^3·y^2+xy^3=? 先化简再求值:(-1/3xy)2·[xy(2x-y)-2x(xy-y2)],其中x=-3/2,y=2快 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 因式分解x^2y^2+x^2y+xy^2+3xy+x+y+1 -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^-1)^2*(-xy^-2)^-3/(-x^2y^3) ( )-(x^2+3xy)=-xy-1/3y^2 y^3+xy^2+2xy+x^2-1 因式分解