Question 372236
{{{v^2 + 6v - 46 = 9 }}},
{{{v^2+6v = 55}}},
{{{v^2 + 6v + 9 = 64}}}, after adding {{{(6/2)^2}}} to both sides.
{{{(v+3)^2 = 64}}}.
v+3 = 8 or v+3 = -8 after using the square-root principle
v = 5 or v = -11, the final solutions.