Question

Решите последние 2 задания.
II-2 и III

Answer 1

2
{11,5-x≥0⇒x≤11,5
{11,5-x<144⇒x>11,5-144⇒x>-132,5
{|x-5|≥2⇒x-5≤-2⇒x≤3 U x-5≥2⇒x≥7
x∈(-132,5;3] U [7;11,5]
3
(√x+1)/(x+√x+1)*√x(√x-1)(x+√x+1)/[√x(1-√x)(1+√x)]=-1