若|3x-2y|+|5+3y|=0,则x²-2y=若|x-1|+|2y-5|+|4+3z|=0,则x²-y²+xyz=

若3x-5y=0,则x+y/x=（）,x-y/y=（）,2x-3y/2x+3y=( ) (5)若x/2=y/3(y不为0）则x/y=____,x+y/y=___,y/x-y=___. 若|x+y-3|+(x-y-5)^2=0,则x)^2-y^2= 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 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-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 若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 若x,y互为相反数（y≠0）,则2x+5+2y+3x/y=____ 若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是（）?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8？(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8 若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求2x+2√x*√y+3y/x-√x*√y+y 若2x=3y,则(x*x+y*y)/x*x=? 若x,y满足|2x-y-3|+|3x+2y+1|=0,则x= y= 若线段x ,y 满足[2x-3y]*[3x+2y]=0 则x/y=? 若5x+3y=3x+4y=x+2y+6,则x+y=___ 若x,y满足|x-y+1|+(x+y+3)^2=0则x^2-y^2= 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 若(3x-2y)/(x+y)=2/3,则3x/5y=