$\csc\left(x\right)\sec\left(x\right)-\cos\left(x\right)$

$\frac{d^4}{dx^4}\left(x^4-4x^3\right)$

$\int\frac{x^2-5x+6}{x^2+4}dx$

$\left(y^3-7y\right)\left(-8+y^3\right)$

$5p\:-\:p$

$\left(\frac{x^{-2}y^4\cdot2y^3}{\left(2y^3\right)^{-1}}\right)^3$

$\frac{dy}{dx}=5x^2-12x^2y$