what is the following expression equal
_____
√ 62-2i^2
_____
A.)√60i

B.)8i

C.) 8
____ ____
D.) √62 -√ 2i

Question

what is the following expression equal
                  _____
               √ 62-2i^2
        _____
A.)√60i

B.)8i
        
C.) 8
         ____    ____
D.) √62  -√ 2i

anonymous · Answer

Please don't post multiple questions all at once. You won't be able to pay attention if two people are trying to help you, and it crowds out questions other people may have.

anonymous · Answer

That being said, is the original expression
a)$(\sqrt{62-2i})^2$

b)$\sqrt{62-2i^2}$

c)None of the above.

anonymous · Answer

B

anonymous · Answer

$i^2 = -1 \implies -2i^2 = -2(-1) = 2$

anonymous · Answer

So what would you have under the radical?

anonymous · Answer

i think the answer is c

anonymous · Answer

Yes, because you have $\sqrt{64}$