$-3\cdot\left|4\cdot\left(-5\right)\right|$

$y'=y+2e^{\left(-x\right)}$

$\int\frac{y^2-25}{y^9}dy$

$y'\:=\:-\frac{1}{x^2}-\frac{y}{x}\:+\:y^2$

$\lim_{x\to-\frac{\pi}{2}}\left(\frac{\cos\left(x\right)}{1-sin\left(x\right)}\right)$

$\frac{d}{dx}\left(\ln\left(x\right)+e^{-\frac{y}{x}}=c\right)$