\[x^{2} - 5x - 24\]
\[x_{1} + x_{2} = 5;\ \ x_{1} \cdot x_{2} = - 24\]
\[x_{1} = 8;\ \ x_{2} = - 3.\]
\[x^{2} - 5x - 24 = (x + 3)(x - 8).\]