Question

(3х+2)²+(4х-1)(4х+1)=(5х-1)²

Answer 1

(3x + 2)²+ (4x - 1) * (4x + 1) = (5x - 1)²

9x² + 12x + 4 + 16x² - 1 = 25x² - 10x + 1

25x² + 12x + 3 = 25x² - 10x + 1

12x + 3 = -10x + 1

12x + 10x = 1 - 3

22x = - 2

Ответ:

        1

x = - ----

        11