Răspuns:
9
Explicație pas cu pas:
U(104^251 + 45^77) =
= U(104×104×104×...×104{ x251} + 45×45×45×...×45{ x77} ) =
= U(104×104×104×...×104{ x250} × 104 + 5) =
= U( (104×104)×(104×104)×...×(104×104){ x125} × 4 + 5)
= U(6×6×6×...×6{x125} × 4 + 5 ) =
= U(6×4 + 5) =
= U(24+5)
= U(29)
= 9
x251 si x77 inseamna de 251 ori, respectiv de 77 ori.
