Question

(2Х-5)²-0.5Х=(2Х-1)(2Х+1)-15 ПОМОГИТЕ

Answer 1

(2x - 5)² - 0,5x = (2x - 1)(2x + 1) - 15
4x² - 20x + 25 - 0,5x = 4x² - 1 - 15
4x² - 20x - 0,5x - 4x² = -1 - 15 - 25
-20,5x = -41
x = 41 / 20,5
x = 2

Ответ: x = 2