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urgent!!! repede dau coroana​

Urgent Repede Dau Coroana class=

Răspuns :

Răspuns:

b) [tex](7^{2} )^{19} : 7^{20}[/tex]= [tex]7^{2*19} :7^{20}[/tex]= [tex]7^{38} : 7^{20} = 7^{38-20} = 7^{18}[/tex]

c) [tex](8^{2})^{10}: 8^{17} = 8^{2*10} : 8^{17} = 8^{20} : 8^{17} =8^{20-17} =8^{3}[/tex]