Find all real or imaginary solutions to equation.
Use the method of your choice.
3v^2+4u-1=0
reposting for help
I assume you wanted the same variable throughout, so ...
3v^2+4v-1=0
It does not factor, so let's use the quadratic formula
v = (-4 ± √(16+12))/6
= (-4 ± 2√7)/6
= (-2 ± √7)/3