Question

How do you evaluate `abs(x+y)` when x=3, y=-5?

Answer 1

`2`

Explanation:

The `color(blue)"absolute value"` denoted by the ' bars' can only ever have a `color(red)"positive value"`

This is because it gives a measure of how far a number is from zero irrespective of it's sign.

That is `|4|=|-4|=4` since 4 and - 4 are both 4 units from zero.

Here `|x+y|=|3+(-5)|=|3-5|=|-2|=2`