Question

find the roots of the equation x3-3x^2+x+5

Answer 1

x^3-3x^2+x+5=(x+1)(x^2-4x+5)

(x+1)(x^2-4x+5)=0
x+1=0→x+1-1=0-1→x=-1
x^2-4x+5 different to zero

The root of the equation is x=-1