Question

已知x+y-2的绝对值+（z-x+1）的平方+（y-z-3）的四次方=0,则x+y+z等于?

Answer 1

根据题意,

x+y-2=0

z-x+1=0

y-z-3=0

联立方程,x=0 ,y=2 ,z = -1

x+y+z=0+2-1=1