Question

x^3-2x^2-64x+128=0
Помогите решить.

Answer 1

$x^3-2x^2-64x+128=0\ x^2(x-2)-64(x-2)=0\ (x-2)(x^2-64)=0\ x^2=64 or x-2=0\ |x=8 x=2\ |x=-8\ \ x=-8; 2; 8.$