(3х - 2)(3х + 2) - (2х - 5)(8х - 3) = 4х - 19

9х² - 4 - (16х² - 6х - 40х + 15) = 4х - 19

9х² - 4 - 16х² + 6х + 40х - 15 - 4х + 19 = 0

- 7х² + 42х = 0

-7х(х - 6) = 0

- 7х = 0 х - 6 = 0

х = 0 х = 6

Ответ : х1 = 0, х2 = 6