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Which expression gives the discriminant of ax^2 + bx + c = 0?
Ab^2 - 4ac
Bb^2 + 4ac
C2b - 4ac
D4ac - b^2
Answer & Solution
Correct answer: A. b^2 - 4ac
The discriminant is the part under the square root in the quadratic formula, b^2 - 4ac.
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