希望给出解析若√(x-y-2)+|2x+y-7|=0,则x,y的值是
希望给出解析若√(x-y-2)+|2x+y-7|=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?
若|x+y-1|+(x-y-2)²=0,求代数式(x+2y)(x-2y)-(2x-y)(-y-2x)的值.
已知(x+y)(x+y+2)-8=0,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x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是()?
若实数X,Y满足X^2+3Y^2-12Y+12=0,则Y的值是?
已知x-y/x=x/x-2y(y不等于0),求x:y的值
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
若x+3y=3x+2y=7,则x,y的值分别是
1、若X+Y=6,x^2-y^2=24,则x-y的值是( )
若2x-y=3,x-2y=4,则x+y的值是( )