Question

What is the discriminant of `0 = x^2 + 4x + 4`?

Answer 1

Discriminant`(Delta)=0`

Explanation:

Given a second degree equation in the general form:
`ax^2+bx+c=0`
the discriminant is:
`Delta=b^2-4ac`

Here,
`a=1, b=4 and c=4`
So,
`Delta=color(red)4^2-4color(red)((1)(4))`
`Delta=16-16`
`Delta=0`

which means the given equation has two coincident real solutions.