The expression to be solved is:
[tex]5\cdot(-v-5)\cdot3\cdot(v-8)\text{ = 0}[/tex]The zero product property states that the solution to this equation is the values of each term equals to 0.
[tex]\begin{gathered} (-v\text{ - 5) = 0} \\ -v\text{ = 5} \\ v\text{ = -5} \end{gathered}[/tex][tex]\begin{gathered} (v\text{ - 8) = 0} \\ v\text{ = 8} \end{gathered}[/tex]The answers are -5 and 8.