"Tutti e due" o "entrambi"
If you also learned before that "both" is "tutti e due" than this will clarify things a little bit: http://forum.wordreference.com/showthread.php?t=53831
In short : "entrambi" is more formal way of saying "both" and is used not that often as "tutti e due" in conversations
Entrambi simply sounds better ;-) Entrambi is for masculine words and Entrambe is for feminine words. Eg.: Entrambi i mariti - Entrambe le mogli. Cheers!