Ответ:

4. (2x - 1)(2x + 1) = 2(x - 3)² + x(2x - 3)

4x² - 1 = 2(x² - 6x + 9) + 2x² - 3x

4x² - 1 = 2x² - 12x + 18 + 2x² - 3x

15x = 19

[tex]x = \frac{19}{15} = 1 \frac{4}{15} [/tex]