Question

(х-8)в квадрате= 2х(х-8) -17

Answer 1

(x - 8)² = 2x(x - 8) - 17
x² -16x + 64 = 2x² - 16x - 17
x² - 16x - 2x² + 16x = -17 - 64
-x² = -81
x² = 81
x = ±9