$\lim_{x\to\infty}\left(\frac{3sin\left(x\right)}{x}\right)$

$6+4\left(w-5\right)-\left(4w-6z^2\right)-4z^2$

$m^6-14m^3n^3+49n^6$

$\int_{-\infty}^{-9}\left(\frac{48}{x^2-64}\right)dx$

$\int\left(x+7\right)^5\left(x+4\right)^{-7}dx$

$a^3=1728$

$\left(2x^2+\frac{4}{9}y^2\right)\left(2x^2-\frac{4}{9}y^2\right)$