Math Symbols: Additions, Subtractions & Brackets

[soroban]

$$\begin{array}{cc} \text{\boxed{text}} & \boxed{text} \\ \\ \text{\overbrace{x + y}^{3}} & \overbrace{x + y}^3 \\ \\ \text{\underbrace{x+y}_{5}} & \underbrace{x+y}_5 \\ \\ \text{{9\choose3}} & {9\choose3} \\ \\ \text{\binom{9}{3}} & \binom{9}{3} \\ \\ \text{\rlap{////}3a^2b} & \rlap{////}3a^2b \\ \end{array}$$

 

[Dustinsfl]

$$\begin{array}{cc} \text{\boxed{text}} & \boxed{text} \\ \\ \text{\overbrace{x + y}^{3}} & \overbrace{x + y}^3 \\ \\ \text{\underbrace{x+y}_{5}} & \underbrace{x+y}_5 \\ \\ \text{{9\choose3}} & {9\choose3} \\ \\ \text{\binom{9}{3}} & \binom{9}{3} \\ \\ \text{\rlap{////}3a^2b} & \rlap{////}3a^2b \\ \end{array}$$

Wikipedia has a great list of latex code. It isn't extensive but it has many good ones
http://en.wikipedia.org/wiki/Help:Displaying_a_formula

 

[Amer]

nice list i like them