问题:
若实数x、y、z满足(x-z) 2-4(x-y)(y-z)=0,则下列式子一定成立的是( )
A.x+y+z=0
B.x+y-2z=0
C.y+z-2x=0
D.z+x-2y=0
若实数x、y、z满足(x-z) 2-4(x-y)(y-z)=0,则下列式子一定成立的是( )
A.x+y+z=0 | B.x+y-2z=0 | C.y+z-2x=0 | D.z+x-2y=0 |
参考答案: