Для квадратного уравнения \(\displaystyle x^2-14x-6=0\) вычислите дискриминант

\(\displaystyle {\rm D}=\)[ ],

найдите корни уравнения и упростите их.

\(\displaystyle x_1=\)

\(\displaystyle -\Big(\)[ ]\(\displaystyle \Big)+\)[ ]   [ ]

\(\displaystyle =\)

[ ]

 

\(\displaystyle x_2=\)

\(\displaystyle -\Big(\)[ ]\(\displaystyle \Big)-\)[ ]   [ ]

\(\displaystyle =\)

[ ]