Question

Calculate the discriminant.



x2 – 2x + 4 = 0



A.
0


B.
12


C.
–12


D.
20

Answer 1

To calculate discriminant:
\[\Large D = b^2-4ac\]

Answer 2

The discriminant in a quadratic equation is found by b² − 4ac. Since you are given a quadratic equation this can be used.

A quadratic equation is an equation which can be written as: ax ² + bx + c where a ≠ 0

Find the corresponding values of a, b, and c from the quadratic equation and plug them into the formula for the discriminant.

Answer 3

SO A

Answer 4

http://static.fjcdn.com/thumbnails/comments/a0/3d/a03d5efb3bfd8eb18581b961551fca7f.gif

Answer 5

To find discriminant for ax ² + bx + c where a ≠ 0, all you need to do is calculate b² − 4ac.

Answer 6

Really

Answer 7

Can you do that?

Answer 8

yes really

Answer 9

It's been so Long since I did this stuff

Answer 10

Can you find discriminant?

Answer 11

yes

Answer 12

Ok great!

Answer 13

It's C

Answer 14

http://static.fjcdn.com/thumbnails/comments/3c/05/3c052fd38af0cc29457c769be8aa1cad.gif

Answer 15

Thanks @geerky42

Answer 16

Welcome!