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Efectuati;c][5la puterea3]la puterea7;5la puterea19...

Răspuns :

5^3^7= 125^7 5^19= 5^3 x 5^16 = 125 x 5^4 x 5^11 = 125 x 625 x 5^3 x 5^8 = 125 x 625 x 125 x 5^4 x 5^4 = 125 x 625 x 125 x 625 x 625 = 625^3 x 125^2