inquire about (someone or something)
To ask or try to learn more about someone or something. Mother, if Gerald inquires about you, what should I tell him? I'm inquiring about that bill right now.
inquire about someone or something
to ask about someone or something. I inquired about Tom and was told that he doesn't live here anymore. You will have to inquire about that at the front desk.
inquire about
v. To seek information about something or someone: I went to the store and inquired about available jobs.