$\frac{dy}{dx}=\frac{xy}{x^2+32}$

$\frac{\sqrt{20}+\sqrt{80}-2\sqrt{125}}{\sqrt{40}}$

$\lim\:_{x\to\:+\infty\:}\left(15x\:ln\left(x\right)\right)$

$\sin^2\left(3\right)$

$\lim_{x\to1}\left(\frac{x^2+3x+2}{x^2-x-2}\right)$

$0.25\left(12x-20\right)$

$-8\:x\:-10\:x\:-2$