Question

If value of (1 + i)3 + (1 - i) is equal to​

Answer 1

Answer:

$3(1 + i) + (1 - i) \\ 3 + 3i + 1 - i \\ 4 + 2i \\ 2i = - 4 \\ i = \frac{ - 4}{2} \\ i = - 2$