$\frac{dy}{dx}\left(25x^2+16y^2+200x-160y+400=0\right)$

$\left(\frac{5m^6}{8}-\frac{4a^8}{3}\right)^2$

$\left(10m-4n\right)\left(10m-4n\right)^2$

$\left(1-sina\right)\cos x$

$\lim_{x\to\infty}\frac{33-25x^2}{14x+5x^2}$

$f-f-f-f-f-f-f-f$

$\left(\frac{1}{2}q-\sqrt{3}\right)^2$