Решить уравнение: (3x+2) (3x-4) - (2x+3) (3x-1) + (3x+1) (x-4)

1) 9x² - 12x + 6x - 8 - (6x² - 2x + 9x - 3) + 3x² - 12x + x - 4;

9x² - 12x + 6x - 8 - (6x² + 7x - 3) + 3x² - 12 + x - 4;

9x² - 12x + 6x - 8 - 6x² - 7x + 3 + 3x² - 12 + x - 4;

6x² - 24x - 9

х (1) + х (2) = - 4

х (1) • х (2) = - 1,5 = - 1 1/2 = - 3/2 = - 9/6

х (1) = 8.

х (2) = - 12.

1) 9x² - 12x + 6x - 8 - (6x² - 2x + 9x - 3) + 3x² - 12x + x - 4;

9x² - 12x + 6x - 8 - (6x² + 7x - 3) + 3x² - 12 + x - 4;

9x² - 12x + 6x - 8 - 6x² - 7x + 3 + 3x² - 12 + x - 4;

6x² - 24x - 9=0

х₁+х₂=-4

х₁*х₂=-9/6

х₂=8

х₁=-12