$\frac{dy}{dx}=\frac{x-1}{\sqrt{x+1}}$

$4x^2+8x=-3$

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

$\left(-6b-\left(-\frac{3}{2}b\right)\right)$

$\lim_{x\to10}\left(\frac{x\:ln\left(2x+1\right)}{4\cos\left(4x-4\right)}\right)$

$x^2+1x-12$

$\int\frac{2x+5}{x^2-4x+9}dx$