Question

Решите уравнение: (x-1)(x²+x+1)-x²(x-1)=0

Answer 1

(x-1)(x²+x+1)-x²(x-1)=0
(x-1)((x²+x+1)-x²)=0
(x-1)(x²+x+1-x²)=0
(x-1)(x+1)=0
x-1=0
x+1=0
x=1
x= -1