4x² = 0,16x;

1. Move all terms to one side: 4x² - 0,16x = 0.
2. Factor out x: x(4x - 0,16) = 0.
3. Set each factor to zero: x = 0 or 4x - 0,16 = 0.
4. Solve for x: x = 0 or 4x = 0,16, which gives x = 0,04.