Решите неравенство (2х+5)(8-x)

Question

Решите неравенство (2х+5)(8-x)<0

Answer 1

Ответ: x∈(-∞;-2.5)∪(8;+∞)

8}} \right." alt="\left \{ {{2x+5<0} \atop {8-x<0}} \right. \\\left \{ {{2x<-5} \atop {-x<-8}} \right. \\\left \{ {{x<-2.5} \atop {x>8}} \right." align="absmiddle" class="latex-formula">