we can solve it further
ab + 2bi - ai +2
ab + i(2b-a) + 2 - Furqan Ali 6 years ago
use the foil method. First, Outer, Inner, Last term. First means multiply the terms which occur first in each binomial. Then Outer means multiply the outermost terms in the product. Inner means multiply the innermost two terms. Last means multiply the terms which occur last in each binomial.
simplify it if there are similar terms. Since there aren't, the final answer is