(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
3xy²除以(-x分之6y²)³乘以(x分之12y)²
计算:(xy-x²)乘 x-y分之xy
(xy分之x²-y²)-(xy-x²分之xy-y²)
(1)(xy-x²)除以xy分之x²+y²-2xy 乘 x²分之x-y (2)先
(xy-x²)·x²分之x-y
计算:2x+2y分之3y + x²+xy分之2xy
2x+2y分之3y 加 x²+xy分之2xy
化简求值.(x-2y分之4xy 再加+x)除以4x³-x²y分之x²+4xy+4y
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)
2x+y分之4x²-4xy+y²除以(4x²-y²)化简