Решаем уравнение:

(3x^2 - 2x - 5)(x + 2) = 0;

1) 3x^2 - 2x - 5 = 0;

D = (-2)^2 - 4 * 3 * (-5) = 4 + 60 = 64;

x1 = (2 + 8)/6 = 5/3;

x2 = (2 - 8)/6 = -6/6 = -1;

2) x + 2 = 0;

x = -2.