SOLUTION: Not sure how to type it, but the question is write the following radical in simplist form If you can express is at a real number: (a small 4 outside the radical sign), radical sign

Question 1131438: Not sure how to type it, but the question is write the following radical in simplist form If you can express is at a real number: (a small 4 outside the radical sign), radical sign -16.
My teachers notes do not make sense and videos I�ve watched are not making sense either. I hope the question is written out on, not sure how to write it. Thanks.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Not sure how to type it, but the question is write the following radical in simplest form:
If you can express is at a real number: (a small 4 outside the radical sign), radical sign -16.
:
, the 4th root of -16
we can factor this like this

extract the square root of -1

obviously the 4th root is 2, so we have just
2i

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