\[ y'(x)=-x^6+3 x^4 y(x)-3 x^2 y(x)^2+y(x)^3+2 x \] ✓ Mathematica : cpu = 0.102738 (sec), leaf count = 39
\[\left \{\left \{y(x)\to x^2-\frac {1}{\sqrt {-2 x+c_1}}\right \},\left \{y(x)\to x^2+\frac {1}{\sqrt {-2 x+c_1}}\right \}\right \}\] ✓ Maple : cpu = 0.039 (sec), leaf count = 57
\[\left \{y \left (x \right ) = \frac {\sqrt {2 c_{1}-2 x}\, x^{2}-1}{\sqrt {2 c_{1}-2 x}}, y \left (x \right ) = \frac {\sqrt {2 c_{1}-2 x}\, x^{2}+1}{\sqrt {2 c_{1}-2 x}}\right \}\]