Algebraeasy · Past Paper
The quadratic formula to find roots of ax^2 + bx + c = 0 is:
Ax = (-b ± √(b^2 - 4ac)) / 2a
Bx = (b ± √(b^2 - 4ac)) / 2a
Cx = (-b ± √(b^2 + 4ac)) / 2a
Dx = -b / 2a
✓ Correct Answer: A — x = (-b ± √(b^2 - 4ac)) / 2a
This is the standard quadratic formula derived by completing the square.
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