Question

Simplify the expression. Write your answer in the
form a +bi.
(7+3i)-(4-21)

Answer 1

3 + 5i

Explanation:

Given

(7 + 3i) - (4 - 2i)

Distribute the parenthesis, multiplying each term in the second by - 1

7 + 3i - 4 + 2i ← collect like terms

= 3 + 5i