Question

For which value of b would x^2 + bx - 24 be prime?

a. 3
b. 5
c. 10
d. 23

Answer 1

Answer:

3

Step-by-step explanation:

24 + (-1) = 23, 12 + (-2) = 10, 8 + (-3) = and 6 + (- 4) = 2, none of the sums are equal to 3, therefore b = 3 would give a prime quadratic. The correct answer is then A. 3