$35-3^3$

$\lim_{x\to2}\left(\frac{x^2-4}{x^2-6x+8}\right)$

$2+4+8-7-9-4-1$

$\left(5z\:-7\right)\:\left(5y\:-12\right)\:$

$\log_{10}\left(x\right)-4\log_x\left(10\right)=3$

$\left(\:x\:+\:2\:\right)^2+\:\left(\:2x\:+\:4\:\right)\left(\:2x\:-\:4\:\right)\:+\:\left(\:x\:+\:3\:\right)^3$

$\frac{dy}{dx}=\frac{y^2+xy-4x^2}{x^2}$