19. Which represents the discriminant of a quadratic equation? A. D = b2 + 4ac B. D = b2 - 4ac C. D = -b2 + 4ac D. D = -b2 - 4ac
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19. Which represents the discriminant of a quadratic equation? A. D = b2 + 4ac B. D = b2 - 4ac C. D =
19. Which represents the discriminant of a quadratic equation? A. D = b2 + 4ac B. D = b2 - 4ac C. D = -b2 + 4ac D. D = -b2 - 4ac
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Answer:
B
Step-by-step explanation:
Because b²-4ac can determine the nature of the roots of a quadratic equation.