Ответ:
\[x^{2} + 4x - 5 = 0\]
\[D_{1} = 4 + 5 = 9\]
\[x_{1} = - 2 + 3 = 1;\ \]
\[x_{2} = - 2 - 3 = - 5;\]
\[x^{2} + 4x - 5 = (x + 5)(x - 1).\]
\[x^{2} + 4x - 5 = 0\]
\[D_{1} = 4 + 5 = 9\]
\[x_{1} = - 2 + 3 = 1;\ \]
\[x_{2} = - 2 - 3 = - 5;\]
\[x^{2} + 4x - 5 = (x + 5)(x - 1).\]