Question

Решите неравенство (а)

Answer 1

3/(x-1)-(x+1)>0
(3-x²+1)/(x-1)>0
(4-x²)/(x-1)>0
(2-x)(2+x)/(x-1)>0
       +            _                  +                _
----------(-2)---------(1)-------------(2)--------------
x∈(-∞;-2) U (1;2)