Question

Calculate the discriminant.
x^2 - 2x + 2 = 0

Answer 1

Do you know the formula for the discriminant?

Answer 2

nope.

Answer 3

\( D = b^2 - 4ac \)

Using the coefficients from the quadratic form: \(ax^2 + bx + c = 0\)

Answer 4

so...whats the answer?

Answer 5

nvm got it.

Answer 6

Okay. I get: \((-2)^2 - 4(1)(2) = 4 - 8\\ = -4\)

Answer 7

thank you :)

Answer 8

You're welcome. :)
In case you didn't know, if you know the quadratic formula:
\[ \frac{-b \pm \sqrt{\color{green}{b^2 - 4ac}}}{2a} \]
The green part is the discriminant. It's useful to evaluate the discriminant since it can give us insight on the quadratic's solutions. Just some extra information. :P