Odpowiedź :
(x - 3)(x - 2) = 7x - 30
x² - 2x - 3x + 6 = 7x - 30
x² - 5x + 6 = 7x - 30
x² - 5x + 6 - 7x + 30 = 0
x² - 12x + 36 = 0
(x - 6)² = 0
x - 6 = 0 ➡️ x = 6
(x - 3)(x - 2) = 7x - 30
x² - 2x - 3x + 6 = 7x - 30
x² - 5x + 6 = 7x - 30
x² - 5x + 6 - 7x + 30 = 0
x² - 12x + 36 = 0
(x - 6)² = 0
x - 6 = 0 ➡️ x = 6