Решите пожалуйста срочно!!! Даю 25 баллов!!!!
1)[tex] log_{7}^2x -2 log_{7} x-3=0[/tex]
2)[tex] 0.2^{ 2x^{2}-x} \ \textless \ 1[/tex]
3)[tex]log_{2} (2x+1)\ \textgreater \ log_{2} (x-2)[/tex]
4)[tex]3^{x+3}+5*3^{x-1} =86[/tex]
5)[tex]log_{ \frac{1}{2} } (2x+5)\ \textgreater \ -3[/tex]
6)[tex]log_{7} x + log_{7}(x-1)\ \textgreater \ log_{7} 2 [/tex]
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