How to remove Facebook and Whatsapp?

Hi!

How I can I uninstall Facebook and Whatsapp ? I don’t use them, so they are useless to me. I tried using terminal : sudo-apt get remove Facebook. But it doesn’t work. I will always end up with these 2 errors :

W: Not using lockping for read only lock file /var/lib/dpkg/lock
E: Unable to locate package facebook

Just drag & drop to the trash, or right click then select remove from desktop