Question

помогите с 8 номерам

Answer 1

$left { {{x>8} atop {9-x<0}} right. ; left { {{x>8} atop {-x<-9}} right. ; left { {{x>8} atop {x>9}} right. \\--------(8)/////////////////////////\\------------(9)//////////////////\\x>9$

Ответ №2.

Answer 2

спасибо :)