Question

X2 + 2x + 5 = 0
The discriminant

Answer 1

`\huge\boxed{16}`

Explanation:

The discriminant of
`y=ax^2+bx+c` is equal
`b^2-4ac`.

We have the equation:

`x^2+2x+5=0\to a=1,\ b=2,\ c=5`

Substitute:

`b^2-4ac=2^2-4(1)(5)=4-20=-16`