$\lim_{x\to+\infty}\left(\frac{\ln\left(1+x^{-2}\right)}{x^{-1}}\right)$

$\left(a-100\right)\left(a+95\right)$

$\int\left(x^3-2\right)\csc\left(x^4-8x\right)dx$

$\frac{\tan\:26^{\circ}\:-\tan\:\left(-4^{\circ}\:\right)}{1+\tan\:26^{\circ}\:\tan\:\left(-4^{\circ}\:\right)}$

$\frac{dy}{dx}=\frac{2+\sqrt{x}}{7+\sqrt{y}}$

$16m^2-40mn+25n^2$

$\frac{dy}{dx}=\:3+7y$