The difference between "can you please look into it" and "please look into it" lies in the tone and level of politeness.
"Can you please look into it":
- This phrase is a polite request that also seeks permission. By using "can you," you are asking if the person has the ability or permission to investigate the matter.
- It implies that you are acknowledging their capacity to help and expecting a positive response. The use of "please" adds politeness to the request.
Example: "Can you please look into the issue with the internet connection? I'm having trouble accessing some websites."
"Please look into it":
- This phrase is a straightforward request, but it does not seek permission explicitly. It is a direct way of asking someone to investigate or handle the matter.
- It is still polite, thanks to the use of "please," but it doesn't carry the sense of seeking permission as in the previous phrase.
Example: "Please look into the delay in processing the order. We need to resolve this as soon as possible."
In both cases, you are asking someone to investigate or take action on a particular matter, but the first one adds an extra layer of politeness by asking for permission explicitly. The choice of which phrase to use can depend on the context, your relationship with the person, and the level of formality you want to convey.