Question

3
`√(16)` +
`√(-9)`

Simplify the expression. Write your answer as a complex number.

Answer 1

Explanation:

hello :

let: A = 3√16+√-9

16=4² and -9 = 9i² =(3i)² .... ( i² = -1)

√16 =√4² = 4 and √-9 = √9i²= √(3i)² ± 3i

A= 12 ± 3i