Question

Решите уравнение:
(3х+2)(3х-4)=(2х+3)(3х-1)+(3х+1)(х-4)

Answer 1

9x² - 6x - 8 = 6x² + 7x - 3 + 3x² - 11x - 4
9x² - 6x - 8 = 9x² - 4x - 7
9x² - 9x² - 6x + 4x = - 7 + 8
- 2x = 1
2x = - 1
x = - 0,5