Answer: Option 'a' is correct.
Step-by-step explanation:
As we know about the discriminant value i.e.
if we have given a quadratic equation :
[tex]ax^2+bx+c=0[/tex]
then,
discriminant value will be
[tex]b^2-4ac[/tex]
There are 3 properties regarding discriminant value as follows:
[tex]1)b^2-4ac>0\\\\means,\\\\\text{ there exists real zeros}\\\\2)b^2-4ac=0\\\\means,\\\\\text{ there exists equal zeroes}\\\\3)b^2-4ac<0\\\\means,\\\\\text{ there does not exists real zeroes}[/tex]
So, here we need a zero real number solutions i.e. there does not exists any real number.
So,
[tex]b^2-4ac=-5[/tex]
Hence, Option'a' is correct.
