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{ x } ^ { 2 } - 4 x - 5 = 0

4 \sin \theta \cos \theta = 2 \sin \theta

y = 3x + 4

699 * 533

\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]

\left\{ \begin{array} { l } { 8 x + 2 y = 46 } \\ { 7 x + 3 y = 47 } \end{array} \right.

\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }

\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x

\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}