$\lim_{x\to4}\left(\frac{x^2-10}{x^2+2x-24}\right)$

$\:5\:x\:+\:3\:y\:+\:\left(-\:x\right)\:+\:6\:z$

$\sqrt{5}+\sqrt{5}$

$\int c^2xdx$

$\frac{\sec\left(x\right)+\csc\left(x\right)}{\sec\left(x\right)\csc\left(x\right)}$

$\frac{d^2}{dx^2}\left(x^2-y^2-x\right)$

$\int\left(tan\:\frac{2}{3}x\right)dx$