Question 133182
You're on the right track, but you've got an error.

You used the quadratic equation, which is correct.
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 

However, note that the entire answer is over 2a. Not just the radical portion. So the -6 in your answers need to be divided by 2. Also, yo can simplfy {{{sqrt(52)}}} into {{{sqrt(4)sqrt(13)}}}
My answers are:

{{{-3 + sqrt(52)/2}}} and {{{-3 - sqrt(52)/2}}}
{{{-3 + sqrt(13)}}} and {{{-3 - sqrt(13)}}}