
Christopher B. answered 10/17/14
Tutor
New to Wyzant
Multidimensional Tutor With An Emphasis In Mathematics
The fifth root of (-1) equals -1 because (-1)(-1)(-1)(-1)(-1)(-1)= -1.
If you are asking what is 5*√-1 then the answer is 5i because the square root of (-1) is i. Then you multiply 5 times i and your answer becomes 5i.
I hope this helps.