Question

решить 9^х-6×3^х-1<_3

Answer 1

$9^x-6*3^{x-1} textless 3\ 3^{2x}-2*3^x textless 3\ t=3^x\ left { {{t^2-2t-3 textless 0} atop {t textgreater 0}} right. \ left { {{tin(-infty;-1)cup(3;infty)} atop {t textgreater 0}} right. \ 3 textless t textless infty \ left { {{3^x textgreater 3} atop {3^x textless infty}} right. \ left { {{x textgreater 1} atop {x textless infty}} right. \ xin (1;infty)$