$\frac{6.9}{3}$

$\frac{d}{dx}\left(\sqrt{\frac{\left(x-3\right)^3}{\left(x-1\right)\left(x-2\right)}}\right)$

$x^2-\frac{2}{4}x+\frac{1}{16}$

$\int\frac{4x^3}{\sqrt{9-x^8}}dx$

$\lim_{x\to0}\frac{x\left(6+x\right)}{x}$

$\left(\frac{5}{4}s-\frac{1}{3}\right)^2$

$\frac{dy}{dx}=-\frac{y^{11}sinx}{10}$