Solve by quadratic formula:

$\displaystyle {12}{x}^{{2}}+{5}{x}-{25}={0}$

If you have two rational solutions, list them separated by commas, for example: $\displaystyle \frac{{2}}{{3}},\frac{{5}}{{2}}$ type "2/3,5/2"

If you have two irrationl solutions, type $\displaystyle \frac{{{5}\pm{2}\sqrt{{{3}}}}}{{5}}$ as "(5+-2sqrt(3))/5"