$\sin\left(x\right)+\tan\left(x\right)\cdot\cos\left(x\right)$

$3\left(8\right)^2\left(5\right)-2\left(8\right)\left(5\right)^2+20$

$\ln x^6=12$

$\frac{dy}{dx}\left(\tan\left(xy\right)=-\sin\left(xy\right)\right)$

$4a^2b+6ab-9a^3b^2$

$\left(x+1\right)\left(x-2\right)\left(x+3\right)$

$\left(x^2+9y\right)^3$