Hi everyone. I am trying to understand the difference between the following. Both mean "Open an account on Facebook" but there are differences between the two. Can you tell me why there is a "aan" ending on Hasaba (account) and why there is an 'alif before fataHa (open) on the first sentence (imperative?). I have bolded the parts that differ. Can you translate each sentence, so I have an idea of how they differ?
افتح حسابًا في فيس بوك
فتح حساب في فيس بوك