Absolute values are NEVER negative, but are either positive or zero.
If a number is positive, its absolute value is positive.
Examples: |45| = 45, |74.6| = 74.6
If a number is negative, delete the negative sign for its absolute value is
positive.
Examples: |-54| = 54, |-84.1| = 84.1
If the number is zero, its absolute value is zero.
Example: |0| = 0
Now you know the answer, right?
Often, the definition is given as 
which means you
square it and then take the non-negative square root of it. But there is
no need to do that when all you have to do is just take the number as it is
between the absolute bars | | or take off the negative sign if it has one.
The reason for that definition is so we can define it with just one equation,
because there are times when we need it to be that way in more advanced
mathematics.
Edwin
