$\left(3x^5y^4\right)^2$

$2\sin\left(x\right)\left(\cos^2\left(x\right)\right)$

$\sqrt{8\sqrt{3^2\cdot\left(5^2+11\right)}}$

$\left(x^3-x+1\right)\cdot\left(x^2+\frac{1}{3}\right)$

$\int\frac{1}{\left(\sqrt{64-16\:x^2}\right)}dx$

$\frac{x^2-x-6}{x-3}$

$\lim_{x\to-\infty}\left(\frac{x-2}{x^2-1}\right)$