So, I have three expressions P Q and R, and their negatives. I want to add them together in all possible ways, like so:
P Q R
P Q -R
P -Q -R
-P Q R
-P Q -R
-P -Q -R
Order doesn't really matter since you're adding the terms together, I know this. I just want to make sure I have completely exhausted all possibilities, as well as know how I did. I have very little discrete math knowledge.
Thanks