Question

what is the absolute value mean

Answer 1

Absolute value is the distance away from zero on a number line.

The number inside the absolute value brackets is always going to be positive because, like I said, it's the distance away from zero.

The best way to think of it is literally the distance to something. You would never say "I'm -3 miles away from my house." You would say "I'm 3 miles from my house."

Answer 2

P.S.

This should go in the mathematics section :)