How do i solve this using imaginary numbers? PLEASE HELP

Question

asked Nov 28, 2021 150k views

1 Answer

Serge Pedroza · Answer 1 · 2021-12-05T12:00:29+0000

Answer:

14 -2i

Explanation:

9 + sqrt(-4) - ( -5 + sqrt(-16))

We know the sqrt of a negative number is i * sqrt(number)

9 + isqrt(4) - ( -5 + isqrt(16))

9 + 2i - (-5 + 4i)

Distribute the negative sign

9+2i +5 -4i

Combine like terms

14 -2i