$\frac{d^8}{dx^8}\left(6x^5+5x^4-3x^3+2x-4\right)$

$\int xtan\left(x\right)sec^2\left(x\right)dx$

$\frac{\left(a^4\right)\:\left(a^5\right)}{\left(a^4\right)\left(a^2\right)}$

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

$\int\left(x^2\:cosat\right)dx$

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

$\frac{dy}{dx}=3x\cdot e^y$