Write the expression (7 – 7i) + (–8 – 2i) in the form a + bi

Answer 1

Combine the whole numbers and the i's

(7+-8) + (-7i+-2i)

=-1+-9i

Answer 2

Alison,

Could would you tell me if the problem listed below is correct:

(4+5i)(4-5i)=
16+-i