若2X-5y=0,切X≠0,则6X+5y分之6x-5y=

若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 （5x-6y)(x+y)=0(x不等于y),则y/x= 若3x-5y=0,则x+y/x=（）,x-y/y=（）,2x-3y/2x+3y=( ) 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 已知x*x+4x+y*y-2y+5=0,则x*x+y*y=? 若2x-5y=0,则y：x 若(5y-6y)(x+y)=0(X≠0),则Y/X=（?） 若x,y互为相反数（y≠0）,则2x+5+2y+3x/y=____ 若2X-5y=0,切X≠0,则6X+5y分之6x-5y= 若|x+y-3|+(x-y-5)^2=0,则x)^2-y^2= （x-y-5）^2+|x+6y+2|=0,则x-y^2= (5)若x/2=y/3(y不为0）则x/y=____,x+y/y=___,y/x-y=___. 已知|5x-y-8|+(7y-x+2)=0则4x+6y （x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y 已知:3x-5y=0,求x/y,x-y/y,x-y/x x*x+2x+y*y-4y+5=0 x= y= 若|2x-y+5|+(x+2y-4)的平方=0,则（2x-y)的三次方-（x-3y)(y-2x)的平方 {x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0