Answer:
The value of the discriminant is 12.
Step-by-step explanation:
We are given the quadratic equation is
.
Now, we know,
<em>The discriminant for the quadratic equation
is given by
.</em>
On comparing the equations, we have,
a= 2, b= -2 and c= -1
So, the discriminant is given by,

i.e. 
i.e. D= 12
Hence, the value of the discriminant is 12.