Решите уравнение:

(х+1) (х+3) (х+14) = (х+2) (х+5) (х+11)

(х+1) (х+3) (х+14) = (х+2) (х+5) (х+11);

(x^2 + 4x + 3) (x+14) = (x^2+7x+10) (x+11);

(x^3 + 4x^2 + 3x + 14x^2 + 56x + 42) = (x^3 + 7x^2 + 10x + 11x^2 + 77x + 110)

x^3 + 18x^2 + 59x + 42 = x^3 + 18x^2 + 87x + 110;

59x - 87x = 110 - 42;

-28x = 68;

x = - 68/28 = - 177 = - 2 3/4;