$5+2+3+1$

$\int_0^{\frac{\pi}{2}}\left(tan\:2x\right)dx$

$a\left(b-2\right)+\left(b-2\right)$

$\lim_{x\to0}\left(x^3\right)$

$\int x^2cos\left(\frac{x}{5}\right)dx$

$\int\frac{2x-1}{\left(x-1\right)\left(x+3\right)}dx$

$\frac{dy}{dx}=\:\frac{2+ye^{\left(xy\right)}}{2y-xe^{\left(xy\right)}}$