Помогите решить, пожалуйста:
1) [tex]9*3^{2x+2} -3*3^{2x+1} -9^{x} \leq 89[/tex]
2) [tex]3^{1+x} *2^{1-x}+3^{x}*2^{-x} \ \textless \ 10,5[/tex]
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