Let's say you have pokerus with power bracer and killed a patrat will you earn: (1+4)x2=10 or 1+(4x2)=7
well according to PE(MD)(AS) the 2nd one is right without the brackets but I'm not sure
You will get 10 Attack Evs.
Source: I have Ev trained 50+ Pokemon, so I know that this is correct.