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The discriminant (∆) of a quadratic equation in the form ax^2 + bx + c = 0 is calculated using the formula ∆ = b^2 - 4ac, where a, b, and c are the coefficients of the quadratic equation.
the discriminant is ∆ = 9^2 - 4ac.
If you provide the values of coefficients a, b, and c, i can help you calculate the discriminant (∆) for the specific quadratic equation you are referring to;)