丨x+y+4丨+(x-2)²=0,则3x+2y=
若丨3x+4y-1丨+(3y+2x-5)²=0,则x= ,y=
丨x+y+4丨+(x-2)²=0,则3x+2y=
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
若|x+2y-1|+y²+4y+4=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)&
已知x*x+4x+y*y-2y+5=0,则x*x+y*y=?
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
丨3x+2y+3丨+(2x-4y-14)²=0,求x y的值.
丨x+2y+3丨+(2x+y)²=0,求x-y的值
若|x+y+4|+(x-y+2)²=0,则3x+2y=( )
已知(x+3)+丨X-y+10丨=0 ,求5x²y-[2x²y-(3xy-xy²)-3x&
若3x-4y=0,则x/y=______,(x-y)/y=______,(3x+2y)/(2x+3y)=_____.
2x²-3xy=y²=0(x,y不得o)求x/y+y/x