$x^2y-\frac{1}{3}x^2y+6x^2y$

$\frac{dy}{dx}=\frac{e^y}{1}$

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

$\int\frac{1}{81}\left(\frac{1}{\cos^5\left(x\right)}-\frac{1}{\cos^3\left(x\right)}\right)dx$

$4-\left(2.7+8.95\right)$

$\int\left(\frac{5x}{\sqrt{x^2+10}}\right)dx$

$\frac{1350}{1-s}>2700$