Respuesta :

Answer:

v = 1/2 and v = -5/2

Step-by-step explanation:

4v^2 + 8v -5 =0

Factor it out:

(2v-1)(2v+5)=0

2v-1 = 0

2v = 1

v= 1/2

2v +5 = 0

2v = -5

v = -5/2