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2 votes
Which of the following is the discriminant of the polynomial below?

x2 + 4x +5
A. 5
B. 4
C.-4
D. -16

User Dshkol
by
7.6k points

2 Answers

4 votes

Answer: -4

Explanation:

User Ayurchuk
by
6.7k points
3 votes

Answer:

-1

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.

Hope this helps!

User Zander Rootman
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7.3k points