\[ E=mc^2 \]
\[ a^2 + b^2 = c^2 \]
\[ H_2O \]
\[ NH_3 \]
\[ \frac{4}{5} \]
\[ \frac{4}{5} + \frac{3}{9} \]
\[ \frac{5}{6} - \frac{7}{3} \]
\[ \frac{1}{2} \cdot \frac{9}{3} \]
\[ \frac{1}{2} \times \frac{9}{3} \]
\[ \frac{3}{4} \div \frac{2}{5} \]
\[ \sqrt{2} = 1.414213562 \]
\[ \sqrt{3} = 1.732050808 \]
\[ \sqrt{4} = 2 \]
\[ \log_2{8}=3 \]
\[ \log_2{4}=2 \]
\[ \log_3{9}=2 \]
\[ \sum_{i=1}^5 i \]
\[ \sum_{i=3}^6 2i - 1 \]
\[ \sum_{i=2}^6 \frac{i+1}{i} \]
\[ \begin{matrix} 10 & 12 & 14 \\ 14 & 5 & 34 \\ 9 & 34 & 23 \end{matrix} \]
\[ \begin{vmatrix} 10 & 12 & 14 \\ 14 & 5 & 34 \\ 9 & 34 & 23 \end{vmatrix} \]
\[ \begin{bmatrix} 10 & 12 & 14 \\ 14 & 5 & 34 \\ 9 & 34 & 23 \end{bmatrix} \]
\[ \begin{pmatrix} 10 & 12 & 14 \\ 14 & 5 & 34 \\ 9 & 34 & 23 \end{pmatrix} \]