Question 1015628
Simplest? Not sure what you mean. You can convert to vertex form.
{{{y=3x^2+5x-14}}}
{{{y=3(x^2+(5/3)x)-14}}}
{{{y=3(x^2+(5/3)x+(5/6)^2)-14-3(5/6)^2}}}
{{{y=3(x+(5/6))^2-504/36-75/36}}}
{{{y=3(x+5/6)^2-5729/36}}}
{{{y=3(x+5/6)^2-193/12}}}
I'm not sure that's simpler.