Question

GTNN

|x|+|10-x|

Answer 1

A=|x|+|10-x|>|x+10-x|=10

=>Min A=10<=>x>0

                      10-x>0

<=>0<x<10

Answer 2

\(\text{|}x\text{|}+\text{|}10-x\text{|}\ge\text{|}x+10-x\text{|}=10\)

Vậy GTNN là 10