Решите неравенство (а)
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)