Question

Multiply and simplify the following complex numbers:
(1+i). (3 – 5i)

Answer 1

-2i+8

Explanation:

(1+i)(3-5i)

3+3i-5i-5i^2

3-2i-5(-1), because i^2=-1,

3-2i+5

-2i+3+5

-2i+8