If the quadratic equation x^2 + 4x + k = 0 has roots that are real and distinct, what must be the co

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A. k < 4

B. k > 4

C. k = 4

D. k ? 4

E. None of the above

Answer: B. k > 4

For the roots to be real and distinct, the discriminant must be greater than zero: b^2 - 4ac > 0. Here, 4^2 - 4(1)(k) > 0 leads to k < 4.

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