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Lg (2x—10)=2

Cine ma ajuta?. Va rog..


Răspuns :

[tex]\lg(2x-10)=2 \\ 2x-10\ \textgreater \ 0\rightarrow x\ \textgreater \ 5 \\ 2x-10=10^2 \\ 2x=110 \\ x=55[/tex]