Question

решите систему неравенств

Answer 1

$left{begin{array}{l} x^2-x-2 ; textless ; 0 \ 5-2xgeq 0 end{array}right Rightarrow; left { begin{array}{l} (x+1)(x-2) ; textless ; 0 \ x leq frac{5}{2} end{array}right Rightarrow; left { begin{array}{l} -1 ; textless ; x ; textless ; 2 \ x leq 2.5 end{array}right;; Rightarrow \\\-1 ; textless ; x ; textless ; 2; ; ; ,; ; ; xin (-1;;;2).$