Question

решите уравнение х^3 - 10 х^2 - 4х + 40 = 0

Answer 1

х^2(x-10)-4(x-10)=0;

(x-10)(x^2-4)=0;

(x-10)(x-2)(x+2)=0:

x=10;

x=2;

x=-2.

Ответ:-2;2;10.