Question

Determine todas as raízes de x 3 − 3x 2 + x − 3 = 0.​

Answer 1

x³-3x² + x-3 = 0

x²(x-3) + 1(x-3) =0

(x-3). (x²+1) = 0

(x-3). (x+i).(x-i) = 0

x'=3. x"=-i . x'"=i <====©