SOLUTION: These are square roots, but I can't put the symbol. Evaluate, if possible. -121

Question 30168: These are square roots, but I can't put the symbol.
Evaluate, if possible.
-121
Answer by askmemath(368) (Show Source): You can put this solution on YOUR website!
Do you know about Imaginary Numbers?
We know that the square of a number is always Positive.
What if there exists such a number whose square is always Negative? Such a number is called Imaginary Number and is denoted by the letter "i"
So
So

121 = 11*11
So your final answer = 11i
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