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M={x aparține N | (-2) la puterea a 8 a mai mic ca 2 la puterea x ma i mic ca 4 la puterea a 6-a}

Răspuns :

[tex](-2)^8\ \textless \ 2^x\ \textless \ 4^6[/tex]

[tex]2^8\ \textless \ 2^x\ \textless \ 2^{2*6}[/tex]

[tex]2^8\ \textless \ 2^x\ \textless \ 2^{12}[/tex]

x∈{9, 10, 11}

M={9, 10, 11}