Вопрос:

Ответ:

\[a^{14}\ :\ *\ \cdot a^{9} = a^{11}\]

\[a^{14}\ :\ *\ = a^{11}\ :a^{9}\]

\[a^{14}\ :\ *\ = a^{2}\]

\[*\ = a^{14}\ :a^{2}\]

\[*\ = a^{12}.\]