Question

Calculate the discriminant.

x2 – 2x + 4 = 0

A.
–12

B.
12

C.
20

D.
0

Answer 1

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

Answer 2

If given a quadratic equation of the form \(ax^2 + bx + c = 0\), then the value of the discriminant can be found using \(D = b^2 - 4ac\)

Answer 3

In this case,

a = 1
b = -2
c = 4

Answer 4

Compute this: \((-2)^2 - 4(1)(4)\)