Being that Business Math was my last "math" course (and not really typical math) one year ago, and the last time I took an algebraic-style course was in 2006, I'm having some trouble remembering how to do even some of the simplest of things.

I do have a goal though, being that I don't want to be in a developmental math course (MTH-102 Basic Algebra) for 16 weeks and would rather just test out of it, I'm hoping to sort of crash course myself and be free, for now.

Onto the main quick question, however:

I forget exactly how an equation like this is done, and Google takes out the symbols, so it's not helping...

|2(-6)|

If I recall right, the | | signs mean the distance it is from 0, but the number automatically becomes positive, even if it is negative, yes? So for the above, it should become |-12| and thus, the answer would be 12, correct?

Next up, I have a question on when to plug in the "square root" symbol in a calculator. I have a problem here that is 135-(square root symbol goes here)18*35-65/130

I just tried plugging in the numbers in that order, putting the square root symbol after - in my computer's calculator, and I got -495.5. I have a feeling this is wrong.

Any help would be appreciated!