найти область определения функции у =√5-х² -4х /√х +4

{5-x²-4x≥0{x+4>0x+4>0⇒x>-4x²+4x-5≤0x1+x2=-4 u x1*x2=-5x1=-5 U x2=1             +               _               +--------------[-5]-----(-4)-----------[1]--------------                              \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\x∈(-4;1]