Question

Решите неравенство $\frac{8}{x^2-6x+8} \ \textless \ 1$

Answer 1

x^2-6x+8≠0
x≠2, x≠4
(8-x^2+6x-8)/(x^2-6x+8)<0
(x^2-6x)/(x^2-6x+8)>0
x(x-6)(x-2)(x-4)>0
x>6, x<0,    2<x<4