Mathematics (Year 9)
Quadratic Equations
Which of the following represents the quadratic formula?
x = (-b ± √(b² - 4ac)) / 2a
x = (b ± √(b² + 4ac)) / 2a
x = (-b ± √(b² + 4ac)) / 2a
x = (b ± √(b² - 4ac)) / 2a
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