SOLUTION: How do you write a complex number into simple form? Such as radical -16

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Question 430929: How do you write a complex number into simple form?
Such as radical -16
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt(-16)
sqrt(16*-1)
sqrt(16)=4
sqrt(-1)=i
sqrt(-16)=4i ans.