Question

Expand and express your answer in simplest complex form (3+5i)(2-i)

Select one:

1+7i

11-7i

6+7i-5i

11+7i

Answer 1

( 3 + 5i )( 2 - i ) = 6 - 3i + 10i -5i²  = 6 + 7i -5(-1) = 6 + 7i + 5

= 11 + 7i