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125 la puterea 42 de impartit la 25 la puterea 63

Răspuns :

125^42 : 25^63=
=(5^3)^42 :(5^2)^63=
=5^126 : 5^126=1
125^42/25^63=(5^3)^42/(5^2)^63=5^126/5^126=1