Шаги решения
Ответ
\frac{2с+6}{6+с}" alt="\frac{(c-6)^2+18c-3c^2}{6c+36-c^2-6c} \\\\\frac{c^2-12c+36+18c-3c^2}{(6-c)*(6+c)} \\\\\frac{-2c^2+c+36}{-(c-6)*(6+c)} \\\\\frac{-2(c*(c+3)-6(c+3))}{-(c-6)*(6+c)} \\\\\frac{-2(c+3)*(c-6)}{-(c-6)*(6+c)} \\\\\frac{-2(c+3)*(-1)}{6+c} \\\\\\
Ответ
\frac{2с+6}{6+с}" align="absmiddle" class="latex-formula">