6v has to multiply whatever is inside the brackets
so you would have to first do { 6v * 2v }
which would give you 12v^2 (12v squared) because v*v would give v^2
then do the rest of the bracket { 6v * 3 }
so you would get 18v
so the answer is 12v^2 + 18v
hope this helps :P
