Question

Calculate the discriminant.

x2 – 2x + 4 = 0

A.
–12

B.
20

C.
12

D.
0

Answer 1

the requested discriminant is given by the subsequent computation:
\[\Delta {\text{ = }}{\left( { - 2} \right)^2} - 4 \times 1 \times 4 = ...?\]

Answer 2

okay!