请你先化减分式x²-2xy+y²/x²-xy÷(x/y-y/x),再将x=3-√3,y=√
x/y=2,求分式x²-xy+3y²/x²+xy+6y²
代数分式 一道题若x÷y=2,则分式(x²-xy+3y²)÷(x²+xy+6y²
|x+2y+3|+(2x+y)²=0求x²-xy+y²
已知x/y=3,求x²+2xy-3y²/x²-2xy+y²
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
若x/y=2,求分式(x²-xy+3y²)/(x²+xy+6y²)的值
3x²-4xy+y²
已知x/y=3,求x²+2xy-3y²/x²-xy+y³的值
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y.若x
已知3x²+xy-2y²=0(x≠0,y≠0),求x/y-y/x-x²+y²/x
已知X²-5XY+6Y²=0,求(X²+3XY)\2Y²的值
计算:(1).(-2xy²)*(3x²y)²