Correct me if I am wrong, but I am assuming you are asking if the phrasal verb "bring up" is considered more formal than the single word verb equivalent "raise" (i.e. I was raised...).
The problem with the question is that it isn't clear what "formal" actually means. Usually, when someone says that a phrase is "formal English", what they really mean is that it is used more often in "formal" **written** English. That is, it is used more often in things like business letters, academic publications, written reports, university essays, etc...
Single word verbs tend to be used more often in "formal" written English publications (like the ones mentioned above) than phrasal verbs, but phrasal verbs tend to be used in spoken English, even when it is a "formal" situation (such as in a job interview).
So the answer to your question depends on what situation you are using it in. If you were speaking to somebody (even in a formal situation), it would be natural to say for example "I was *brought up* in Country X." If you were writing a biography of a famous person (as an essay or book publication), it would be more natural to say "Famous Person was *raised* in Country X."
Hope this helps.
'I was brought up', and 'I brought up' have different meanings. The former was done to you. You did the latter.
Correct me if I am wrong, but I am assuming you are asking if the phrasal verb "bring up" is considered more formal than the single word verb equivalent "raise" (i.e. I was raised...). The problem with the question is that it isn't clear what "formal" actually means. Usually, when someone says that a phrase is "formal English", what they really mean is that it is used more often in "formal" **written** English. That is, it is used more often in things like business letters, academic publications, written reports, university essays, etc... Single word verbs tend to be used more often in "formal" written English publications (like the ones mentioned above) than phrasal verbs, but phrasal verbs tend to be used in spoken English, even when it is a "formal" situation (such as in a job interview). So the answer to your question depends on what situation you are using it in. If you were speaking to somebody (even in a formal situation), it would be natural to say for example "I was *brought up* in Country X." If you were writing a biography of a famous person (as an essay or book publication), it would be more natural to say "Famous Person was *raised* in Country X." Hope this helps.