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Cat face 5 la puterea 23+2×5 LA puterea 21

Răspuns :

=5^21(5²+2)=5^21(25+2)=5^21•27
[tex] 5^{23} +2* 5^{21} = (5^2+2)* 5^{21} = (25+2)* 5^{21} =27* 5^{21} [/tex]