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