-1=C-1=>C=0\\ y=-\dfrac{1}{x}" alt="(x^2)*y'-2x*y=3\\ \dfrac{1}{x^2}y'+\dfrac{-2}{x^3}y=\dfrac{3}{x^4}\\ (\dfrac{1}{x^2}y)'_x=\dfrac{3}{x^4}\\ \dfrac{1}{x^2}y=C-\dfrac{1}{x^3}\\ y=Cx^2-\dfrac{1}{x}\\ y(1)=-1=>-1=C-1=>C=0\\ y=-\dfrac{1}{x}" align="absmiddle" class="latex-formula">