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Comparați nr: a=5la puterea 30 si b=7la puterea 20


Răspuns :

[tex] a=5^{30}=(5^3)^{10}=125^{10} [/tex]

[tex] b=7^{20}=(7^2)^{10}=49^{10} [/tex]

[tex] 125^{10}>49^{10} =\textgreater 5^{30}>7^{20} =\textgreater a>b [/tex]