In the xy-plane, the graph of the function f(x) = x2 bx 4 does not intersect the x-axis. Which of the following must be true about b?A. -8 = b < -4B. b = -4C.-4 < b < 4D.b = 4E. 4 < b = 8I would need a comprehensive explanation on how you arrived at your answer so I'll know how to it the next time around. Thanks!
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