0" alt="3x {}^{2} + 12x + 13 > 0" align="absmiddle" class="latex-formula">
13 + 0" alt="3x {}^{2} + 12 x > 13 + 0" align="absmiddle" class="latex-formula">
13" alt="9 x + 12x > 13" align="absmiddle" class="latex-formula">
13" alt="21x > 13" align="absmiddle" class="latex-formula">
\frac{13}{21} " alt="x > \frac{13}{21} " align="absmiddle" class="latex-formula">