SOLUTION: Please help: Simplify -i^4

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Question 64794This question is from textbook algebra and trigonometry
: Please help: Simplify -i^4 This question is from textbook algebra and trigonometry

Answer by 303795(602) About Me  (Show Source):
You can put this solution on YOUR website!
i=sqrt%28-1%29
so
-i%5E4=-%28sqrt%28-1%29%29%5E4 (Making the assumption that there are no brackets around the -i)
-%28sqrt%28-1%29%5E2%2Asqrt%28-1%29%5E2%29
-%28-1%2A-1%29
-%281%29
-1