-x^2-4x+5>=0. плиз СРОЧНО

-x^2 -4x + 5 = 0x^2 +4x - 5 = 0 x1 + x2 = -4x1*x2 = -5 x1 =-5x2 = 1___--_____-5____+_____1____---_____ -5 <= x <= 1

-x^2-4x+5=0D=16+20=36x1=4+6\-2=-5x2=4-6\-2=1x∈(-∞;-5]∪[1;+∞)