$-3b\:+\:6b^2\:-10b^3\:-3b\:+6b^3\:-10b^2\:-3b$

$\left(x^2-0.2ix+100\right)^2$

$\int\frac{\left(36-t^2\right)^{\frac{3}{2}}}{t^6}\:dt$

$\left(13d-9\right)^2$

$\left(1-3a\right)\left(3ax+1\right)$

$5\left(2q+9\right)+4q$

$\lim_{x\to\infty}\left(\frac{2x+20}{x^2}\right)$