Se considera nr. nat A. Calculati 675:a la puterea a 3-a
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Răspuns:75
Explicație pas cu pas:
[tex]a=[4*3+(121-1):8]^{7} :9^{10}=(12+15)^{7}:9^{10}=27^{7}:9^{10}=(3^{3})^{7}:(3^{2})^{10}=3^{21}:3^{20}=3^{21-20}=3^{1}=3\\a=3\\675:a^{3}=675:3^{3}=675:9=75[/tex]