Решите уравнение: (5x - 1) (x + 2) + 3 (x - 4) (x + 4) = 2 (2x + 3) ^2 - 8

(5 х - 1) (Х + 2) + 3 (Х - 4) (Х + 4) = 2 (2 х + 3) ^2 - 8

5 х^2 + 10 х - Х - 2 + 3 (х^2 - 16) = 2 (4 х^2 + 12 х + 9) - 8

5 х^2 + 9 х - 2 + 3 х^2 - 48 = 8 х^2 + 24 х + 18 - 8

8 х^2 + 9 х - 50 = 8 х^2 + 24 х + 10

9 х - 50 = 24 х + 10

24 х - 9 х = - 50 - 10

15 х = - 60

Х = - 60 : 15

Х = - 4

(5 х-1) * (х+2) + 3 (х-4) (х+4) = 2 (2 х+3) ^2-8

5x^2+10x-x-2+3 (x^2-16) = 2 (4x^2+12x+9) - 8

5x^2+10x-x-2+3x^2-48=8x^2+24x+18-8

8x^2+9x-50=8x^2+24x+10

9x-50=24x+10

9x-24x=10+50

-15x=60

x=-4