$\int-3\cdot\cos\left(x\right)\cdot\tan\left(x\right)dx$

$25x^2+20x+4=0$

$\left(x^2+16\right)\left(2x-15\right)$

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

$\frac{dy}{dx}\left(y^{\ln\left(x\right)}=e^y-3x+\ln\left(x^y\right)\right)$

$2+8z$

$\sqrt{a^3}b^2$