$25ln\left(e^{\frac{2}{5}}\right)$

$5^2-2\left(5\cdot2\right)+2^2+2\left(5\cdot2-2^2\right)+2^2$

$\frac{dp}{dt}=p\left(3-p\right)\cdot\:\left(2+e^{-t}\cdot\:\:cos\left(t\right)\right)$

$8\:.\:-9\:.\:-1\::\:2\::\:-3\:$

$\frac{d^2}{dx^2}\left(\cos\left(2x\right)\sin\left(4x\right)\right)$

$\frac{1}{3}\left(\frac{36}{25}q^{4\:}+81y^2-d^2\right)$

$a^2-82a+1600$