(3分之2x^3y^2)(-3分之2xy^2)^2
计算[3x分之2-(x+y分之2)乘以[3x分之x+(y-x^2-xy)]除以x分之x-y
已知y分之x=3 求xy分之x方减y方除以xy-y方分之2(x-y)方的值
2x+2y分之3y+x^2+xy分之2xy
计算:2x+2y分之3y + x²+xy分之2xy
2x+2y分之3y 加 x²+xy分之2xy
已知X+Y分之XY等于3,求-X+3XY-Y分之2X-3XY+2Y
已知x+y分之xy=2,那么3x-5xy+3y分之3xy-x-y=
已知X+Y分之XY=2,求-X+3XY-Y分之3X+5XY+3Y
若x+y分之xy=2,则-x+3xy-y分之3x-xy+3y=多少?
几道数学题:x-x^2分之x^2-1×1-y分之xy-x,(xy-x^2)÷xy分之x-y,x^2+x分之x-3÷(x^
(1)-2分之1xy(3y²-2xy+3x²y)
(2分之1x平方y—2xy+y平方)*3xy