\[2x^{2} + bx - 6 = 0;\ \ x_{1} = - 6\]
\[x_{1} \cdot x_{2} = - 6\]
\[x_{2} = - 6\ :( - 6)\]
\[x_{2} = 1.\]
\[- b = x_{1} + x_{2}\]
\[- 6 + 1 = - b\]
\[- b = - 5\]
\[b = 5.\]
\[Ответ:x_{2} = 1;\ \ b = 5.\]