已知x+2y=0(x不等于0)求分式2xy+y2/x2-xy
已知x+2y=0(x不等于0)求分式2xy+y2/x2-xy
已知xy不等于0,且3x2-2xy-8y2=0,求x/y的值?
已知2x2+5xy-3y2=0且xy不等于0,求x:y的值
已知2分之x=3分之y=4分之z,且xyz不等于0,求分式x2+y2+z2分之xy+yz+zx的值
已知X2-2x+y2+6y+10=0,求(x2-2xy)/(xy+y2)的值
已知x2+4y2+x2y2-6xy+1=0,求 x4-y4/2x-y 乘 2xy-y2/xy-y2 除以(x2+y2/x
已知x2+y2-2x-4y+5=0,分式yx−xy
已知x2+y2=3xy且xy不等于0,求x的平方y的-2次方+x的-2次方y的平方的值
已知x+2y=0(x不等于0)求分式2xy+y^2/x^2-xy
已知x2+y2-10x-6y+34=0,求(x-y/x+y)2÷x2-y2/xy×x2+2xy+y2/x2-xy 的值.
初二数学分式化简已知x-3y=0(xy不等于0),求【(2x+y)/(x²-2xy+y²)】*(x-
X2-4XY+3Y2=0(跟在字母后面的2是平方),且XY不等于零,求X/Y+Y/X的值