Answer: The answer to the question you asked up top would be -27, however the question in the picture doesn't match. As for the question in the picture, the answer is should be choice B or 4 square root 2i
Step-by-step explanation:
The first one: add the number together since they are both negative and just place a negative sign in front.
The second one: break down the square root of -18 into 9*-2. Then add [tex]\sqrt{-2} + 3 \sqrt{-2}[/tex] which equals [tex]4\sqrt{2}i[/tex]
