Question

Which complex number is equivalent to (5 + 12i) − (9i2 − 6i), where i =
−1
?

Answer 1

Answer: It's 14+18i I got a correct

Answer 2

14 + 18i

Explanation:

`(5 + 12i) - (9 {i}^(2) - 6i) \\ = (5 + 12i) - (9 * (- 1) - 6i) \\ = (5 + 12i) - ( - 9 - 6i) \\ = (5 + 12i) + ( 9 + 6i) \\ = 5 + 12i + 9 + 6i \\ \red { \bold{ = 14 + 18i}}`