Для квадратного уравнения \(\displaystyle -5x^2+x+8=0\) вычислите дискриминант

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

и найдите корни уравнения.

\(\displaystyle x_1=\)

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

 

\(\displaystyle x_2=\)

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