Tarea difícil translates to difficult task/homework.
Answer:
sorry I don't speak no Spanish I wish I could help
That song fye I love fuerza regida
Try Hard, Work Hard, and You'll Make It!
To help u study, Listen to this, It really worked for me! It may be strange at first, but once u get used to it, Ir'll help alot with concentration.
Good Luck!
Puffin
https://www.youtube.com/watch?v=uX6usZWiMAo&list=RDuX6usZWiMAo&index=1