v-4(4-V)=-2 (2V-1)

v-4(4-V)=-2 (2V-1)

Multiply right side out and multiply 4-v by -1.

(v-4)(-1)(v-4) = 2 - 4v

Divide both sides by -1.

(v-4)^2 = 4v - 2

v^2 -8v + 16 = 4v - 2

Combine terms.

v^2 - 12v + 18 = 0

However, I don't know how to factor this equation. (It would factor nicely, if the middle term were -11v.)