Algebraeasy · Past Paper
The roots of ax^2 + bx + c = 0 are real if:
Ab^2 ≥ 4ac
Bb^2 > 4ac
Cb^2 < 4ac
Db^2 = 4ac
✓ Correct Answer: A — b^2 ≥ 4ac
Real roots occur when the discriminant is non-negative (greater than or equal to zero).
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