When is the nth root of( negetive X raised to the nth power) = x true?

HELPPPWhen is the nth root of( negetive X raised to the nth power) = x true?
it's true when 'x' is even otherwise it's 'ix' where i = nth root of (-1).





This is to do with complex numbersWhen is the nth root of( negetive X raised to the nth power) = x true?
when n is even