Question

Помогите плиз
${x}^{2} - 4x - 3 < 0$

Answer 1

x1=2+√7
x2=-2-√7

(x-(2+√7))*(x-(2-√7))<0
(x-2-√7)*(x-2+√7)<0


{x<2+√7
{x-2-√7

x принадлежит (2-√7;2+√7)
x≠0