SOLUTION: Please help,is it possible to evaluate (sqrt negative 125) ? if not then why?

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Question 880688: Please help,is it possible to evaluate (sqrt negative 125) ? if not then why?
Found 2 solutions by josgarithmetic, KojackDavis:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
You can use i%5E2=-1.
125=25%2A25%2A25.

sqrt%28-125%29
sqrt%28-1%2A5%5E2%2A5%29
5%2Asqrt%28-1%2A5%29
-5i%2Asqrt%285%29 or 5i%2Asqrt%285%29

Answer by KojackDavis(3) About Me  (Show Source):
You can put this solution on YOUR website!
Pull all perfect square roots out from under the radical. In this case, remove the 5i because it is a perfect square.
5i⋅√5
Multiply 5i by √5 to get 5i√5.
ANSWER: 5i√ 5