Question

Multiply and show all steps please!!

Answer 1

the answer is 80 take the positive and negative and use the sign change rule

Answer 2

50

Explanation:

First, find the square roots.

`√(-16) =4i`

`√(-64) =8i`

Remember: i stands for
`√(-1)`

Then use the FOIL method to multiply.

(3+4i)(6-8i)

18-24i+24i-32i²

i²= -1, so :

18+32

50

I have no idea what the other person did, but its wrong.