Question Number 104599 by Ar Brandon last updated on 22/Jul/20
$$\left(\mathrm{1}+\mathrm{t}^{\mathrm{3}} \right)\mathrm{x}'\left(\mathrm{t}\right)+\mathrm{t}^{\mathrm{2}} \mathrm{x}\left(\mathrm{t}\right)+\mathrm{2}\left(\mathrm{x}\left(\mathrm{t}\right)\right)^{\mathrm{2}} =\mathrm{0} \\ $$