若有理数x.y.z满足等式【x-1】^2+【2x-y】^4+lx-3zl^2=0,试求x+y+z的值.

问题描述:

若有理数x.y.z满足等式【x-1】^2+【2x-y】^4+lx-3zl^2=0,试求x+y+z的值.

由条件:x=1,y=2x=2,z=x/3=1/3
x+y+z=10/3能在发个过来吗,我怎么看不懂