Question

What is the value of b^2 - 4ac for the following equation?

x^2 + 5x + 4 = 0

A: 9
B: 16
C: 25

Answer 1

x^2 + 5x + 4 = 0
a=1
b=5
c=4
b^2 -4ac =
25 -4 * 1 * 4 =
25 -16 =
9
answer is A