Question

I asked how to solve xm- 2m if x=-2 and m=-3 and I got two different answers one was 0 and one was 12... HELP!!!

Answer 1

Plug in -2 where the x is and -3 where the m's are 
xm becomes -2*-3 which equals 6 and 2m becomes 2*-3 which equals -6
now we have the equation 6-(-6) which we could turn into 6+6
so the answer is 12, the person who said 0 made a mistake.
when subtracting a negative from a positive, you will always get a positive<span />

Answer 2

Xm-2m
(-2)(-3)-2(-3)
12

The equation can be simplified to 12. I'm not sure how you got 0, but at a guess, you messed up your signs when multiplying. Hope this helps!