$\left(3w\right)\left(w+4\right)\left(w-4\right)\left(w^2\right)$

$\lim_{x\to1}\left[ln\left(x^7-1\right)-ln\left(x^5-1\right)\right]$

$\int_{\frac{\pi}{2}}^{\frac{\pi}{2}}\int\frac{e^{3x}}{e^{x}-1}dx$

$\frac{d}{dx}\left(2x-1\right)^2-6\sin\left(5x\right)$

$\int\frac{x}{\sqrt{x^2+6x+12}}dx$

$x^6-\:4x^3\:entre\:x$