Answer with explanation:
The given expression is:
[tex]1=2 x^2 + 5 x\\\\2 x^2 +5 x -1=0[/tex]
is general form of the quadratic equation.
Of, the Quadratic expression of the type,
[tex]\rightarrow ax^2 + b x +c=0\\\\D{\Discriminant}=b^2-4 a c[/tex]
For, the given Expression
[tex]D=(5)^2-4 \times 2 \times (-1)\\\\D=25 +8\\\\D=33[/tex]
Option B: 33
