Question

Find the difference of the complex numbers?
(3+7i)-(-4-2i)

Answer 1

`(3 + 7i) - ( - 4 - 2i) \\ = 3 + 7i + 4 + 2i \\ = (3 + 4) + (7i + 2i) \\ = \boxed{7 + 9i}`

• 7+9i is the right answer.

Answer 2

7 + 9i

Explanation:

Given

(3 + 7i) - 1(- 4 - 2i) ← distribute both parenthesis

= 3 + 7i + 4 + 2i ← collect like terms

= 7 + 9i