SOLUTION: Please help me evaluate {{{3 sqrt -125}}}. Would it be -5? the question also says if not possible explain why

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Question 880588: Please help me evaluate 3+sqrt+-125. Would it be -5? the question also says if not possible explain why
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
3 * square root of -125 = 3 * square root of (-1 * 25 * 5)
note that the square root of -1 is i an imaginary number therefore
= 3 * 5 * i * square root of 5
= 15i * square root of 5