Question

若|x-2|+|y-3|+|z-5|=0 (1)x,y,z的值 (2)|x|+|y|+|z的值|

Answer 1

|x-2|+|y-3|+|z-5|=0
|x-2|>=0,|y-3|>=0,|z-5|>=0
三个非负数和为0,则每个均为0
x-2=0
y-3=0
z-5=0
(1)x=2,y=3,z=5
(2)|x|+|y|+|z|=2+3+5=10