Given:
\(\cfrac{{\text{x}}-3}{{\text{x}} + 4} < 0 , x \in R\)
Signs of x – 3
x – 3 = 0 → x =3 (Adding both the sides by 3)
x – 3 < 0 → x < 3 (Adding both the sides by 3)
x – 3 > 0 → x > 3 (Adding both the sides by 3)
Signs of x + 4
x + 4 = 0 → x = -4 (Subtracting both the sides by 4)
x + 4 < 0 → x < -4 (Subtracting both the sides by 4)
x + 4 > 0 → x > -4 (Subtracting both the sides by 4)
\(\cfrac{{\text{x}}-3}{{\text{x}} + 4}\) is not defined when x = -4
The interval that satisfies the condition that \(\cfrac{{\text{x}}-3}{{\text{x}} + 4}\)<0 is -4<x<3
Therefore,
x ϵ (-4, 3)