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Mathematics for IGCSE & O level - Equations (Section 4 - No. 7)

Which of the following must you find to use the quadratic formula?
The coefficients a, b, and c
The roots of the equation
The value of the variable x
The discriminant

توضيح

You need the discriminant (b² - 4ac) to find the nature of the roots (real or complex).

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