Dy/dx = x^2 / (2y+1) (2y+1)dy = x^2 * dx ∫ (2y+1)dy = ∫ x^2 * dx 1/2 * ∫ (2y+1) d(2y+1) = x^3 / 3 + C 1/2 * (2y+1)^2 / 2 = x^3 /3 +C y =