Which of the following equations is NOT a variable separable differential equation? A. 2xydx + (x² + 1)dy = 0 eydy - (e¯y+e-²x−y)dx B. D. O E. F. dy dx = xy +3x-y-3 xy-2x+4y-8 (yex − 2x)dx + e* dy = 0 All of the Choices None of the Choices = 0

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