Ubuntu 15.04 can't install anything?

Question

linux

I just want to install chrome.
I go to ubuntu sowware center. I enter the root password. When installing, it writes the following
This requires installing packages from unauthenticated sources

Answer 1

просто наберите в гугле
кликаете на самую первую ссылку
или здесь открываете www.ubuntuupdates.org/ppa/google_chrome
выполняете инструкции на странице

Answer 2

There seems to be a solution
askubuntu.com/questions/85641/how-do-i-deal-with-u...