Start by distributing:
4v^2 + 16v - 2v - 8
4v^2 + 14v - 8 = -8 - 3v
4v^2 + 14v = 3v
4v^2 + 11v + 0 = 0 (Standard form)
If you are looking for the actual roots:
(-b+-sqrt(b^2-4ac))/2a (Quadratic equation)
where a = 4, b = 11, and c = 0