Find 4 geometric means between -5 and -125.
(There are also four different R's since you can use complex numbers such as i)
R:_ {-5,_,_,_,_,-125}
R:_ {-5,_,_,_,_,-125}
R:_ {-5,_,_,_,_,-125}
R:_ {-5,_,_,_,_,-125}