Question

essa questão ((1+2i)+(-1+3i))(2-2i)

Answer 1

( (1 + 2i) + (-1 + 3i) ) * (2 - 2i) =
(1 + 2i - 1 + 3i) * (2 - 2i) =
(0 + 5i) * (2 - 2i) =
5i * (2 - 2i) =
10i - 10i² =
10i - 10 * (-1) =
10i + 10 =
10 + 10i