Thread: Simplify a Negative

Ok, it says -(-10) is 10, which I get, but why does -|-5.2| = -5.2? I thought || were the same as ()

Originally Posted by Jarod_C

Ok, it says -(-10) is 10, which I get, but why does -|-5.2| = -5.2? I thought || were the same as ()

The is the modulus of and it is always positive so...



Whereas are just brackets and do not change the value of inside so...

(It's a minus of a negative number so makes it positive).

thanks for the fast reply, how about [x]? I guess I should ask now instead of when it comes up in the future.

Edit: I think I know the answer, [x] is the same as |x| Right?

Originally Posted by Jarod_C

thanks for the fast reply, how about [x]? I guess I should ask now instead of when it comes up in the future.

You don't get square brackets unless you want to show a bracket of a bracket in which case a square bracket looks neater so...

e.g.
(In which case you are saying, find the value of the brackets first then do the arithmetic outside the square bracket).

A square bracket doesn't change the value of the number so it is the same as curvy bracket.

EDIT: It is not the same as modulus =

I've got a test tomarrow, and the quickness of your replys are helping a lot.
Thanks for the quick help, thanks to air for supporting the site, and thanks to the owners of the site.