Question

Simplify |x| - |-x|.

Answer 1

Answer:

0

Step-by-step explanation:

Two cases: if $x\ge0$

$|x| - |-x| = x - x= 0$

Instead if $x$

$|x| -|-x| = -x -(-x)=-x+x=0$

Alternatively you can try to graph both $f(x) = |x|; g(x)=|-x|$ and checking the vertical distance between the two graphs