"What are you thinking?"
Translation:¿Qué estás pensando?
¿Qué piensas? Rejected and reported Apr 18 2018. https://www.spanishdict.com/guide/spanish-present-tense-forms/ The Spanish simple present tense (el presente or el presente del indicativo) can be used to talk about habitual actions, routines, things happening now or in the near future, universal truths, facts, hypotheticals, lapses of time, and for ordering in restaurants and stores.
"Creer is more spiritual or intuitive. Pensar is more logical or objective. Either one can mean believe or think, depending on context."
Stole from this Duo thread: https://forum.duolingo.com/comment/32138986/What-difference-if-any-is-there-between-Creer-and-Pensar
Pensar is an 'e to ie' stem-changing verb.
"Pensar is a typical ‐ ar verb with an e>ie stem change. All forms will have regular endings and they will follow normal stem changing patterns."
Well...that's good to know endings won't throw us for a loop.
I used ¿Qué usted está pensando? and ¿Qué está usted pensando? and got rejected both times. How would one use the formal? Would one simply not?
Edit: After CervezasPorFavor's comment that verbs should always come immediately after question words, I'm thinking "¿Qué está usted pensando?" or better yet, probably "¿Usted qué está pensando?"