$2\left(x\:+\:4y\right)\:-\:3\left(2y\:+\:9\right)\:$

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

$144y^2+144y+36$

$\left(2a^3b^4c^5\right)^6$

$3^{3.3}$

$\lim_{x\to\pi}\left(\frac{x^2-\pi^2}{3+sinx}\right)$

$\int\frac{2x^3}{\sqrt{4+x^2}}dx$