谢谢诶请在给我看一题,已知2x-y的绝对值+(y-1)²=0 求(2x-6y/x²+xy-6y&su
谢谢诶请在给我看一题,已知2x-y的绝对值+(y-1)²=0 求(2x-6y/x²+xy-6y&su
已知X²-5XY+6Y²=0,求(X²+3XY)\2Y²的值
已知x²-2xy=3xy-6y² ,求x/y(y不等于0)的值
已知xy=-2,x-y=3,求(x+y)(x-y)-y²+(x-y)²-(6x²y-2xy
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
已知x/y=2,求(x²-xy+3y²)/(x²+xy+6y²)的值
已知y分之x=2,求(x²+xy+6y²)分之(x²-xy+3y²)的值
问已知x²+y²=7,xy=-2,求5x²-3xy-4y²-11xy-7x&su
x/y=2,求分式x²-xy+3y²/x²+xy+6y²
已知x²+y²-4x+6y+13=0,求x²+2y/x²-3y²的值
已知x/y=3,求x²+2xy-3y²/x²-xy+y³的值
已知3x²+xy-2y²=0(x≠0,y≠0),求x/y-y/x-x²+y²/x