$csc\left(u\right)-cos\left(u\right)cot\left(u\right)$

$\int sin^4\left(\theta\right)cos\left(\theta\right)d\left(\theta\right)$

$2x^4-\:5x^3-11x^2+20x+12$

$\frac{x^3}{x^2-9}$

$\frac{d}{dx}\left(x=e^{xy}\right)$

$10x^2\left(a+b\right)-6y\left(a+b\right)-wa-wb$

$-3\:.\left(-8\right)$