$\frac{\left(3x\right)}{\left(x+2\right)\left(x+4\right)}\:$

$\int_1^{2x}\left(\sqrt{1+t^3}\right)dt$

$2.3\cdot10^5+2.3\cdot\:10^5$

$\frac{1-1}{\sqrt{31-2-1}}$

$\left(6+3i\right)-\left(4-2i\right)$

$\frac{dy}{dx}\left(y=\sqrt[3]{x}\left(\sqrt{x}+3\right)\right)$

$\left(17a+20b^2c\right)\left(17a-20b^2c\right)$