化成最简分式(1)2xy-4/x²y²+3xy-10 (2)2x²+xy-6y²
化成最简分式(1)2xy-4/x²y²+3xy-10 (2)2x²+xy-6y²
化成最简分式:x²-xy-6y²分之x²+xy-2y²
分式计算:(x²+2xy+y²)/(x²y+xy)*y/(x+y)
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
化简分式;(1)3xy/42x-3xy(2)a-b/a²-b²(3)x²+2xy+y
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
分式(x²-y²\xy)-(xy-y²\xy-x²)可化简为
x+2y=0(x≠0),求分式x²-xy分之2xy+y²
分式除法(2y-x)÷x²-4xy+4y²/x+3xy要过程
3x+4y=0 x不等于0 求分式2xy+y²/x²-xy
1/x-1/y=4,求分式(3x+xy-3y)/(x-2xy-y)