\[ y'(x)=-x^6+3 x^4 y(x)-3 x^2 y(x)^2+y(x)^3+2 x \] ✓ Mathematica : cpu = 0.083613 (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
\[y \relax (x ) = \frac {x^{2} \sqrt {2 c_{1}-2 x}-1}{\sqrt {2 c_{1}-2 x}}\]