C. -4 because you factor and add like terms
(2x - 3) (2x + 3)
Assuming that you wanted to break down the problem, this would be the answer as you split both parts in half.
Hope this helps!
Answer:
v≈ -1.65573 ,v≈6.91725
Step-by-step explanation:

≈ -1.65573
≈ 6.91725
v=0, v=7