$\frac{dy}{dx}-y^2-1=0$

$\left(\frac{x}{4}+1\right)\le1$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{2\:tan\left(x\right)}{sec^2\left(x\right)}\right)$

$12x^2-75$

$2\left(a-8\right)+7=5\left(a+2\right)-3a-19$

$\sqrt[3]{475-132}$

$\lim_{x\to0}\left(\frac{\sqrt{x^2+9}}{x}\right)$