若|x-2|+|2y+6|=0,则x+y的值是( )
实数X.Y满足X*X+Y*Y-2X-2Y+1=0,则(Y-4)/(X-2)的取值范围是?
1、若X+Y=6,x^2-y^2=24,则x-y的值是( )
若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是()?(10x-11y)/(x-y) =[(
若实数x,y满足x^2+y^2-6x-4y+12=0,则x^2+y^2的取值范围是
若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是()?
若2x-5y=0,且x不等于0,则(6x-5y)/(6x+5y)的值是______.
已知(x+y)(x+y+2)-8=0,则x+y的值是?
若2x-5y=0,且x不等于0,则6x+5y分之6x-5y的值是( )
若|x+y-1|+(x-y-2)²=0,求代数式(x+2y)(x-2y)-(2x-y)(-y-2x)的值.
若x-3y=-3,则5-2x+6y的值是( )
若实数X,Y满足X^2+3Y^2-12Y+12=0,则Y的值是?
若2x-y=3,x-2y=4,则x+y的值是( )