$\frac{dy}{dx}\left(\sqrt{xy-\ln\:\left(xy\right)}=8xy\right)$

$\lim_{x\to1.9}\left(\sqrt{\frac{2+x}{2-x}}\right)$

$\left(-3xy\right)^2\left(5y^2\right)\left(2x^2y^3\right)$

$\int\frac{6x^2+3x+4}{x\left(x^2+2\right)}dx$

$\frac{y^2}{\left(2x^{-1}y^{-4}\right)}$

$3\frac{4}{3}$

$\cos^230$