Xˇ2-Xˇ2分之Xˇ2-XY+Yˇ2
Xˇ2-Xˇ2分之Xˇ2-XY+Yˇ2
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
(xy-x^2)乘以(xy)/(x-y)
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?
x平方+y平方+2xy分之x平方-4y平方除以x平方+xy分之2y+x
x²+y²+2xy分之x²-4y² ÷x²+xy分之2y+x
(x²+2xy+y²分之x²-4y²)÷(x²+xy分之x+2y)
化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x
(-3分之1xy)的平方×[xy(2x-y)-2x(xy-y的平方)]