Questions on Algebra: Complex Numbers answered by real tutors!

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Question 147192: sqrt(-100) I'm completely stumped! I don't know how to take the square root of a negative number! Can somebody please show me how to figure this out?: sqrt(-100) I'm completely stumped! I don't know how to take the square root of a negative number! Can somebody please show me how to figure this out?
Answer by nabla(409) About Me  (Show Source):
You can put this solution on YOUR website!
i=sqrt(-1)
So sqrt(-100)=sqrt(100(-1))=10i