$\int\:\left(\frac{2\left(\arctan\left(\sqrt{x}\right)\right)}{\sqrt{x}\left(1+x\right)}\right)dx$

$\frac{2x^3+x-1}{x^2-5x}$

$5y-14^2$

$\frac{d^3}{dx^3}4x^6+secx$

$\frac{10s}{18t}$

$\lim_{x\to0}\left(\cos\left(x+\frac{\pi}{2}\right)^2.\cos\left(\frac{1}{x}\right)\right)$

$5m+4+m-8$