Question

sendo P(x)= x² -2x+1, calcule:P(1+i)

Answer 1

P(1+i)= (1+i)² -2.(1+i) +1

P(1+i)= 1 +2i +i² -2 -2i +1

Lembrando que i²=-1

P(1+i)= 1 +2i - 1 -2 -2i +1

P(1+i)= -2 +1

P(1+i)= -1