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23-05-2020
Mathematics

contestada

Which of the following is the discriminant of the polynomial below?
x2 + 4x +5
A. 5
B. 4
C.-4
D. -16

Respuesta :

23-05-2020

Answer:

-1

Step-by-step explanation:

The formula for D/4 is b'^2-ac (where b' = 4/2=2, a=1, c=5). When we use the special discriminant (D/4) we get D/4 = (2)^2-1*5 = 4-5=-1.

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