Question

Решите систему неравенств

Answer 1

$left { {{-4x+3x textless 7-14} atop {- x^{2} +18x-34-5x-8 textless 0}} right. left { {{x textgreater 7} atop {- x^{2} +13x-42 textless 0}} right. left { {{x textgreater 7} atop {x textless 6}} right { {{x textgreater 7} .$

Ответ: x∈(7;+∞)