Which of the following equations is NOT a variable separable differential equation? A B (x² − yx²) dx + (y² + xy²) dy = 0 D dy sec y + sin (x−y) = sin (x + y) dx © (xy - x²) dy – y² dx = 0 C eº y dy − (e¯³ + e−²x − ³) dx = 0 -2x -

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A: As per Bartleby guidelines we only give first question answers. Please repost for other parts.

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A: The answers are given below: