$\frac{3}{4}x+5\left(\frac{1}{4}x+\frac{1}{5}\right)$

$\left(a^3-b\right)\left(a^6-a^3b+b^3\right)$

$\lim_{n\to\infty}\left(\frac{1}{1+ae^{mn}}\right)$

$3^0\cdot4^2$

$3m+4m^{2}\cdot7m^{3}$

$\frac{a-25}{a}\cdot\frac{a+2}{a^{2}-3a-10}$

$\frac{dy}{dt}=\frac{1}{t\cdot\:\:y+t+y+1}$