Question

What is the value of the discriminant for the quadratic equation 0 = x + 2 + x2?

Discriminant = b2 – 4ac

–9
–7
7
9

Answer 1

First, write the equation in descending order of exponent of x.
Can you do that?

Answer 2

Your equation is

\(\large 0 = x + 2 + x^2\)

Now write it in the form

\(\large ax^2 + bx + c = 0\)

Then you can read off the values of \(a\), \(b\), and \(c\).