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Fie expresia ,daca x=3,aflati:
x la puterea a doua - x+1            x la puterea a doua  - 2x + 1
____________________      *     ______________________
         x-1                                       x la puterea a treia+ 1
  
Ajutati-ma va rog,ca am nevoie urgent..:)
Multumesccc..:)!!