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y(x)y′(x)+xy′(x)2−y(x)4=0 ✓ Mathematica : cpu = 0.222116 (sec), leaf count = 133
{{y(x)→−tanh2(12(c1−log(x)))−12x},{y(x)→tanh2(12(c1−log(x)))−12x},{y(x)→−tanh2(12(log(x)−c1))−12x},{y(x)→tanh2(12(log(x)−c1))−12x}} ✓ Maple : cpu = 2.056 (sec), leaf count = 95
{y(x)=−121−x,y(x)=121−x,y(x)=−12x−(tanh(−ln(x)2+_C12))2x+x(tanh(−ln(x)2+_C12))−1,y(x)=12x−(tanh(−ln(x)2+_C12))2x+x(tanh(−ln(x)2+_C12))−1}
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