$\lim\:_{x\to\:-1}\left(\frac{r^3-r^2-5r-3}{\left(r+1\right)^2}\right)$

$\sqrt[3]{8a^8}+\sqrt[3]{27a^5}$

$\int\frac{\left(4x^3-t^2+16t\right)}{t^2+4}dx$

$\left(xy+2x^2y\right)^2$

$3-3^2-2-3+4+4^2+5$

$\left(2+2a\right)\left(2-5a\right)$

$3\sqrt{12x}+8\sqrt{27x}+5\sqrt{3x}$