$x^2\frac{dy}{dx}+1=0$

$-5x\left(8x-2\right)-2\left(3x-1\right)\left(2x-3\right)+4\left(5x-2\right)^2$

$\frac{d}{dx}\left(x^3-4\right)^4\left(x^2+5\right)^3$

$\sqrt[12]{x^9}y^{18}$

$\left(x^2y^3-\frac{1}{1+9x^2}\right)dx=-\left(x^3y^2\right)dy$

$\int\frac{1-x}{2x^3-x^2-3x}dx$

$15r+10$