$\left(4\sqrt{3-4a}\right)^5$

$\frac{3}{x+2}+\frac{1}{x^2-4}$

$194x^6y^4-308x^4y^5+121x^2y^6$

$\lim_{x\to0}\left(\frac{sin\left(x\right)^3}{x^2\left(x^2+1\right)}\right)$

$\sqrt{\frac{5}{3}}\cdot\sqrt{\frac{27}{5}}$

$\frac{1}{s\left(s^2+4\right)}$

$\int\frac{3x^2}{\:3+x^2}dx$