Mathematics, 28.02.2021 02:50 lukeperry
A quadratic function, f(x) = x2 + bx + 9, is such that there is only one real root. Which of the following are possible values of b?
I. b = 2
II. b = 6
III. b = -6
IV. b = -2
A. I, II, III, and IV
B. I and IV only
C. II and III only
D. I only
Answers: 1
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