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

Answer:

50

Step-by-step explanation:

First, find the square roots.

$\sqrt{-16} =4i$

$\sqrt{-64} =8i$

Remember: i stands for $\sqrt{-1}$

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.