1. (vt)

2. (vt) probar - you can't prove that accusation: no puedes probar esa acusación they were unable to prove his guilt: no pudieron probar demostrar su culpabilidad they were proved wrong: se ha probado que estaban equivocados with facts

3. (vt) resultar - it proved to be a very difficult exam: resultó ser un examen muy difícil to result