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2la puterea 20:4 la puterea 8=?

Răspuns :

[tex] {2}^{20} \div {4}^{8} = 2 ^{20} \div ({2}^{2} )^{8} =[/tex]

[tex] {2}^{20} \div 2^{16} = 2^{20 - 16} = 2 ^{4} = 16[/tex]