Question

why does the value of modules always positive

Answer 1

|x| is always +ve
|x|=x ,x>=0
    =-x ,x<0
let x=5
case i) |x|=5
case ii) gn x is<0
hence,then ,let x= -5
|x|=-x= -(-5)=5
hence |x|of any no. is always +ve