$-\:\left(\:-\:3\:\:-\:2\:\right)\:-\:\left(\:5\:-\:1\:\right)\:-\:1\:+\:10$

$x^2+\:23x+120$

$\frac{x+3}{2}<5$

$\left(4x^my-\frac{3}{4}\right).\:\left(4x^my+\frac{2}{5}\right)$

$9m-5\left(-5m+9k\right)$

$\frac{dy}{dx}=\frac{\left(e^y+1\right)^2e^{-y}}{\left(e^x+1\right)^2e^{-x}}$

$-8m^2+8m+11m^2-5m^2$