$196m^6-196n^{12}$

$\text{left}\left(t+7\text{right}\right)\text{left}\left(t+7\text{right}\right)\text{left}\left(t+2\text{right}\right)$

$b^6-4a^2b^2+8a^3b^4$

$\int\left(6x^2+4\right)^3dx$

$x^2+2x^2-2x+2x^2+4x^2+4x-2x-4x-4$

$\int\frac{x^5}{\left(8-x^6\right)^2}dx$

$\int_0^{\pi}\left(\frac{1}{5-3\cos\left(x\right)}\right)dx$